8 files changed, 1455 insertions, 99 deletions

diff --git a/poetry.lock b/poetry.lock
index 385da49..4b90dfe 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -7,6 +7,50 @@ optional = false
 python-versions = "*"
 
 [[package]]
+name = "aleksis-builddeps"
+version = "2021.6b0"
+description = "AlekSIS (School Information System) — Build/Dev dependencies for apps"
+category = "dev"
+optional = false
+python-versions = ">=3.6,<4.0"
+
+[package.dependencies]
+black = ">=19.10b0,<20.0"
+curlylint = ">=0.13.0,<0.14.0"
+django-stubs = ">=1.1,<2.0"
+flake8 = ">=3.7.9,<4.0.0"
+flake8-bandit = ">=2.1.2,<3.0.0"
+flake8-black = ">=0.2.0,<0.3.0"
+flake8-builtins = ">=1.4.1,<2.0.0"
+flake8-django = ">=1.0.0,<2.0.0"
+flake8-docstrings = ">=1.5.0,<2.0.0"
+flake8-fixme = ">=1.1.1,<2.0.0"
+flake8-isort = ">=4.0.0,<5.0.0"
+flake8-mypy = ">=17.8.0,<18.0.0"
+flake8-rst-docstrings = ">=0.2.0,<0.3.0"
+freezegun = ">=1.1.0,<2.0.0"
+isort = ">=5.0.0,<6.0.0"
+pytest = ">=6.0,<7.0"
+pytest-cov = ">=2.8.1,<3.0.0"
+pytest-django = ">=4.1,<5.0"
+pytest-django-testing-postgresql = ">=0.1,<0.2"
+pytest-sugar = ">=0.9.2,<0.10.0"
+safety = ">=1.8.5,<2.0.0"
+selenium = ">=3.141.0,<4.0.0"
+sphinx = ">=3.0,<4.0"
+sphinx-autodoc-typehints = ">=1.7,<2.0"
+sphinx_materialdesign_theme = ">=0.1.11,<0.2.0"
+sphinxcontrib-django = ">=0.5.0,<0.6.0"
+
+[[package]]
+name = "appdirs"
+version = "1.4.4"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
 name = "argparse"
 version = "1.4.0"
 description = "Python command-line parsing library"
@@ -15,6 +59,50 @@ optional = false
 python-versions = "*"
 
 [[package]]
+name = "asgiref"
+version = "3.3.4"
+description = "ASGI specs, helper code, and adapters"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+typing-extensions = {version = "*", markers = "python_version < \"3.8\""}
+
+[package.extras]
+tests = ["pytest", "pytest-asyncio", "mypy (>=0.800)"]
+
+[[package]]
+name = "asn1crypto"
+version = "1.4.0"
+description = "Fast ASN.1 parser and serializer with definitions for private keys, public keys, certificates, CRL, OCSP, CMS, PKCS#3, PKCS#7, PKCS#8, PKCS#12, PKCS#5, X.509 and TSP"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "atomicwrites"
+version = "1.4.0"
+description = "Atomic file writes."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "attrs"
+version = "21.2.0"
+description = "Classes Without Boilerplate"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.extras]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit"]
+docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins"]
+
+[[package]]
 name = "babel"
 version = "2.9.1"
 description = "Internationalization utilities"
@@ -26,6 +114,41 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 pytz = ">=2015.7"
 
 [[package]]
+name = "bandit"
+version = "1.7.0"
+description = "Security oriented static analyser for python code."
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+colorama = {version = ">=0.3.9", markers = "platform_system == \"Windows\""}
+GitPython = ">=1.0.1"
+PyYAML = ">=5.3.1"
+six = ">=1.10.0"
+stevedore = ">=1.20.0"
+
+[[package]]
+name = "black"
+version = "19.10b0"
+description = "The uncompromising code formatter."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+appdirs = "*"
+attrs = ">=18.1.0"
+click = ">=6.5"
+pathspec = ">=0.6,<1"
+regex = "*"
+toml = ">=0.9.4"
+typed-ast = ">=1.4.0"
+
+[package.extras]
+d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
+
+[[package]]
 name = "certifi"
 version = "2021.5.30"
 description = "Python package for providing Mozilla's CA Bundle."
@@ -58,6 +181,32 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
+name = "coverage"
+version = "5.5"
+description = "Code coverage measurement for Python"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+
+[package.extras]
+toml = ["toml"]
+
+[[package]]
+name = "curlylint"
+version = "0.13.0"
+description = "{{ 🎀}} Experimental HTML templates linting for Jinja, Nunjucks, Django templates, Twig, Liquid"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+attrs = ">=17.2.0"
+click = ">=6.5"
+parsy = "1.1.0"
+pathspec = ">=0.6,<1"
+toml = ">=0.9.4"
+
+[[package]]
 name = "dbus-python"
 version = "1.2.16"
 description = "Python bindings for libdbus"
@@ -66,6 +215,56 @@ optional = false
 python-versions = "*"
 
 [[package]]
+name = "dj-database-url"
+version = "0.5.0"
+description = "Use Database URLs in your Django Application."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "django"
+version = "3.2.4"
+description = "A high-level Python Web framework that encourages rapid development and clean, pragmatic design."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+asgiref = ">=3.3.2,<4"
+pytz = "*"
+sqlparse = ">=0.2.2"
+
+[package.extras]
+argon2 = ["argon2-cffi (>=19.1.0)"]
+bcrypt = ["bcrypt"]
+
+[[package]]
+name = "django-stubs"
+version = "1.8.0"
+description = "Mypy stubs for Django"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+django = "*"
+django-stubs-ext = "*"
+mypy = ">=0.790"
+typing-extensions = "*"
+
+[[package]]
+name = "django-stubs-ext"
+version = "0.2.0"
+description = "Monkey-patching and extensions for django-stubs"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+django = "*"
+
+[[package]]
 name = "docutils"
 version = "0.16"
 description = "Docutils -- Python Documentation Utilities"
@@ -74,6 +273,22 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
+name = "dparse"
+version = "0.5.1"
+description = "A parser for Python dependency files"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+packaging = "*"
+pyyaml = "*"
+toml = "*"
+
+[package.extras]
+pipenv = ["pipenv"]
+
+[[package]]
 name = "dynaconf"
 version = "3.1.4"
 description = "The dynamic configurator for your Python Project"
@@ -91,6 +306,144 @@ vault = ["hvac"]
 yaml = ["ruamel.yaml"]
 
 [[package]]
+name = "flake8"
+version = "3.9.2"
+description = "the modular source code checker: pep8 pyflakes and co"
+category = "dev"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+
+[package.dependencies]
+importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+mccabe = ">=0.6.0,<0.7.0"
+pycodestyle = ">=2.7.0,<2.8.0"
+pyflakes = ">=2.3.0,<2.4.0"
+
+[[package]]
+name = "flake8-bandit"
+version = "2.1.2"
+description = "Automated security testing with bandit and flake8."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+bandit = "*"
+flake8 = "*"
+flake8-polyfill = "*"
+pycodestyle = "*"
+
+[[package]]
+name = "flake8-black"
+version = "0.2.1"
+description = "flake8 plugin to call black as a code style validator"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+black = "*"
+flake8 = ">=3.0.0"
+
+[[package]]
+name = "flake8-builtins"
+version = "1.5.3"
+description = "Check for python builtins being used as variables or parameters."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = "*"
+
+[package.extras]
+test = ["coverage", "coveralls", "mock", "pytest", "pytest-cov"]
+
+[[package]]
+name = "flake8-django"
+version = "1.1.2"
+description = "Plugin to catch bad style specific to Django Projects."
+category = "dev"
+optional = false
+python-versions = ">=3.6,<4.0"
+
+[package.dependencies]
+flake8 = ">=3.8.4,<4.0.0"
+
+[[package]]
+name = "flake8-docstrings"
+version = "1.6.0"
+description = "Extension for flake8 which uses pydocstyle to check docstrings"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = ">=3"
+pydocstyle = ">=2.1"
+
+[[package]]
+name = "flake8-fixme"
+version = "1.1.1"
+description = "Check for FIXME, TODO and other temporary developer notes. Plugin for flake8."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "flake8-isort"
+version = "4.0.0"
+description = "flake8 plugin that integrates isort ."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = ">=3.2.1,<4"
+isort = ">=4.3.5,<6"
+testfixtures = ">=6.8.0,<7"
+
+[package.extras]
+test = ["pytest (>=4.0.2,<6)", "toml"]
+
+[[package]]
+name = "flake8-mypy"
+version = "17.8.0"
+description = "A plugin for flake8 integrating mypy."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+attrs = "*"
+flake8 = ">=3.0.0"
+mypy = "*"
+
+[[package]]
+name = "flake8-polyfill"
+version = "1.0.2"
+description = "Polyfill package for Flake8 plugins"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+flake8 = "*"
+
+[[package]]
+name = "flake8-rst-docstrings"
+version = "0.2.3"
+description = "Python docstring reStructuredText (RST) validator"
+category = "dev"
+optional = false
+python-versions = ">=3.3"
+
+[package.dependencies]
+flake8 = ">=3.0.0"
+pygments = "*"
+restructuredtext-lint = "*"
+
+[[package]]
 name = "flask"
 version = "1.1.4"
 description = "A simple framework for building complex web applications."
@@ -110,6 +463,40 @@ docs = ["sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-
 dotenv = ["python-dotenv"]
 
 [[package]]
+name = "freezegun"
+version = "1.1.0"
+description = "Let your Python tests travel through time"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+python-dateutil = ">=2.7"
+
+[[package]]
+name = "gitdb"
+version = "4.0.7"
+description = "Git Object Database"
+category = "dev"
+optional = false
+python-versions = ">=3.4"
+
+[package.dependencies]
+smmap = ">=3.0.1,<5"
+
+[[package]]
+name = "gitpython"
+version = "3.1.18"
+description = "Python Git Library"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+gitdb = ">=4.0.1,<5"
+typing-extensions = {version = ">=3.7.4.0", markers = "python_version < \"3.8\""}
+
+[[package]]
 name = "idna"
 version = "2.10"
 description = "Internationalized Domain Names in Applications (IDNA)"
@@ -126,6 +513,44 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
+name = "importlib-metadata"
+version = "4.5.0"
+description = "Read metadata from Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+typing-extensions = {version = ">=3.6.4", markers = "python_version < \"3.8\""}
+zipp = ">=0.5"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "packaging", "pep517", "pyfakefs", "flufl.flake8", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources (>=1.3)"]
+
+[[package]]
+name = "iniconfig"
+version = "1.1.1"
+description = "iniconfig: brain-dead simple config-ini parsing"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "isort"
+version = "5.9.1"
+description = "A Python utility / library to sort Python imports."
+category = "dev"
+optional = false
+python-versions = ">=3.6.1,<4.0"
+
+[package.extras]
+pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
+requirements_deprecated_finder = ["pipreqs", "pip-api"]
+colors = ["colorama (>=0.4.3,<0.5.0)"]
+plugins = ["setuptools"]
+
+[[package]]
 name = "itsdangerous"
 version = "1.1.0"
 description = "Various helpers to pass data to untrusted environments and back."
@@ -156,8 +581,42 @@ optional = false
 python-versions = ">=3.6"
 
 [[package]]
+name = "mccabe"
+version = "0.6.1"
+description = "McCabe checker, plugin for flake8"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "mypy"
+version = "0.910"
+description = "Optional static typing for Python"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+mypy-extensions = ">=0.4.3,<0.5.0"
+toml = "*"
+typed-ast = {version = ">=1.4.0,<1.5.0", markers = "python_version < \"3.8\""}
+typing-extensions = ">=3.7.4"
+
+[package.extras]
+dmypy = ["psutil (>=4.0)"]
+python2 = ["typed-ast (>=1.4.0,<1.5.0)"]
+
+[[package]]
+name = "mypy-extensions"
+version = "0.4.3"
+description = "Experimental type system extensions for programs checked with the mypy typechecker."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
 name = "numpy"
-version = "1.20.3"
+version = "1.21.0"
 description = "NumPy is the fundamental package for array computing with Python."
 category = "main"
 optional = false
@@ -175,6 +634,55 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 pyparsing = ">=2.0.2"
 
 [[package]]
+name = "parsy"
+version = "1.1.0"
+description = "easy-to-use parser combinators, for parsing in pure Python"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "pathspec"
+version = "0.8.1"
+description = "Utility library for gitignore style pattern matching of file paths."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "pbr"
+version = "5.6.0"
+description = "Python Build Reasonableness"
+category = "dev"
+optional = false
+python-versions = ">=2.6"
+
+[[package]]
+name = "pg8000"
+version = "1.19.5"
+description = "PostgreSQL interface library"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+scramp = "1.4.0"
+
+[[package]]
+name = "pluggy"
+version = "0.13.1"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+
+[package.extras]
+dev = ["pre-commit", "tox"]
+
+[[package]]
 name = "port-for"
 version = "0.4"
 description = "Utility that helps with local TCP ports managment. It can find an unused TCP localhost port and remember the association."
@@ -194,6 +702,14 @@ python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 test = ["ipaddress", "mock", "unittest2", "enum34", "pywin32", "wmi"]
 
 [[package]]
+name = "py"
+version = "1.10.0"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
 name = "pycairo"
 version = "1.20.1"
 description = "Python interface for cairo"
@@ -202,6 +718,36 @@ optional = false
 python-versions = ">=3.6, <4"
 
 [[package]]
+name = "pycodestyle"
+version = "2.7.0"
+description = "Python style guide checker"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "pydocstyle"
+version = "6.1.1"
+description = "Python docstring style checker"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+snowballstemmer = "*"
+
+[package.extras]
+toml = ["toml"]
+
+[[package]]
+name = "pyflakes"
+version = "2.3.1"
+description = "passive checker of Python programs"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
 name = "pygments"
 version = "2.9.0"
 description = "Pygments is a syntax highlighting package written in Python."
@@ -229,6 +775,95 @@ optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
+name = "pytest"
+version = "6.2.4"
+description = "pytest: simple powerful testing with Python"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
+attrs = ">=19.2.0"
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+iniconfig = "*"
+packaging = "*"
+pluggy = ">=0.12,<1.0.0a1"
+py = ">=1.8.2"
+toml = "*"
+
+[package.extras]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
+
+[[package]]
+name = "pytest-cov"
+version = "2.12.1"
+description = "Pytest plugin for measuring coverage."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+coverage = ">=5.2.1"
+pytest = ">=4.6"
+toml = "*"
+
+[package.extras]
+testing = ["fields", "hunter", "process-tests", "six", "pytest-xdist", "virtualenv"]
+
+[[package]]
+name = "pytest-django"
+version = "4.4.0"
+description = "A Django plugin for pytest."
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+pytest = ">=5.4.0"
+
+[package.extras]
+docs = ["sphinx", "sphinx-rtd-theme"]
+testing = ["django", "django-configurations (>=2.0)"]
+
+[[package]]
+name = "pytest-django-testing-postgresql"
+version = "0.1.post0"
+description = "Use a temporary PostgreSQL database with pytest-django"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+dj-database-url = "*"
+"testing.postgresql" = "*"
+
+[[package]]
+name = "pytest-sugar"
+version = "0.9.4"
+description = "pytest-sugar is a plugin for pytest that changes the default look and feel of pytest (e.g. progressbar, show tests that fail instantly)."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+packaging = ">=14.1"
+pytest = ">=2.9"
+termcolor = ">=1.1.0"
+
+[[package]]
+name = "python-dateutil"
+version = "2.8.1"
+description = "Extensions to the standard Python datetime module"
+category = "dev"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
+
+[package.dependencies]
+six = ">=1.5"
+
+[[package]]
 name = "pytz"
 version = "2021.1"
 description = "World timezone definitions, modern and historical"
@@ -237,6 +872,22 @@ optional = false
 python-versions = "*"
 
 [[package]]
+name = "pyyaml"
+version = "5.4.1"
+description = "YAML parser and emitter for Python"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+
+[[package]]
+name = "regex"
+version = "2021.4.4"
+description = "Alternative regular expression module, to replace re."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
 name = "requests"
 version = "2.25.1"
 description = "Python HTTP for Humans."
@@ -255,6 +906,69 @@ security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)"]
 socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
 
 [[package]]
+name = "restructuredtext-lint"
+version = "1.3.2"
+description = "reStructuredText linter"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+docutils = ">=0.11,<1.0"
+
+[[package]]
+name = "safety"
+version = "1.10.3"
+description = "Checks installed dependencies for known vulnerabilities."
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+Click = ">=6.0"
+dparse = ">=0.5.1"
+packaging = "*"
+requests = "*"
+
+[[package]]
+name = "scramp"
+version = "1.4.0"
+description = "An implementation of the SCRAM protocol."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+asn1crypto = "1.4.0"
+
+[[package]]
+name = "selenium"
+version = "3.141.0"
+description = "Python bindings for Selenium"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+urllib3 = "*"
+
+[[package]]
+name = "six"
+version = "1.16.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
+name = "smmap"
+version = "4.0.0"
+description = "A pure Python implementation of a sliding window memory map manager"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
 name = "snowballstemmer"
 version = "2.1.0"
 description = "This package provides 29 stemmers for 28 languages generated from Snowball algorithms."
@@ -309,6 +1023,14 @@ test = ["pytest (>=3.1.0)", "typing-extensions (>=3.5)", "sphobjinv (>=2.0)", "S
 type_comments = ["typed-ast (>=1.4.0)"]
 
 [[package]]
+name = "sphinx-materialdesign-theme"
+version = "0.1.11"
+description = "Sphinx Material Design Theme"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
 name = "sphinxcontrib-applehelp"
 version = "1.0.2"
 description = "sphinxcontrib-applehelp is a sphinx extension which outputs Apple help books"
@@ -333,6 +1055,14 @@ lint = ["flake8", "mypy", "docutils-stubs"]
 test = ["pytest"]
 
 [[package]]
+name = "sphinxcontrib-django"
+version = "0.5.1"
+description = "Improve the Sphinx autodoc for Django classes."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
 name = "sphinxcontrib-htmlhelp"
 version = "2.0.0"
 description = "sphinxcontrib-htmlhelp is a sphinx extension which renders HTML help files"
@@ -380,6 +1110,97 @@ lint = ["flake8", "mypy", "docutils-stubs"]
 test = ["pytest"]
 
 [[package]]
+name = "sqlparse"
+version = "0.4.1"
+description = "A non-validating SQL parser."
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
+name = "stevedore"
+version = "3.3.0"
+description = "Manage dynamic plugins for Python applications"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+importlib-metadata = {version = ">=1.7.0", markers = "python_version < \"3.8\""}
+pbr = ">=2.0.0,<2.1.0 || >2.1.0"
+
+[[package]]
+name = "termcolor"
+version = "1.1.0"
+description = "ANSII Color formatting for output in terminal."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "testfixtures"
+version = "6.17.1"
+description = "A collection of helpers and mock objects for unit tests and doc tests."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.extras]
+build = ["setuptools-git", "wheel", "twine"]
+docs = ["sphinx", "zope.component", "sybil", "twisted", "mock", "django (<2)", "django"]
+test = ["pytest (>=3.6)", "pytest-cov", "pytest-django", "zope.component", "sybil", "twisted", "mock", "django (<2)", "django"]
+
+[[package]]
+name = "testing.common.database"
+version = "2.0.3"
+description = "utilities for testing.* packages"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.extras]
+testing = ["nose"]
+
+[[package]]
+name = "testing.postgresql"
+version = "1.3.0"
+description = "automatically setups a postgresql instance in a temporary directory, and destroys it after testing"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+pg8000 = ">=1.10"
+"testing.common.database" = "*"
+
+[package.extras]
+testing = ["sqlalchemy", "nose", "psycopg2"]
+
+[[package]]
+name = "toml"
+version = "0.10.2"
+description = "Python Library for Tom's Obvious, Minimal Language"
+category = "dev"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
+name = "typed-ast"
+version = "1.4.3"
+description = "a fork of Python 2 and 3 ast modules with type comment support"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "typing-extensions"
+version = "3.10.0.0"
+description = "Backported and Experimental Type Hints for Python 3.5+"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
 name = "urllib3"
 version = "1.26.5"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
@@ -415,24 +1236,68 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 dev = ["pytest", "pytest-timeout", "coverage", "tox", "sphinx", "pallets-sphinx-themes", "sphinx-issues"]
 watchdog = ["watchdog"]
 
+[[package]]
+name = "zipp"
+version = "3.4.1"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "pytest-enabler", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
+
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "17b532e759f1a9b879c0f01e607158b35a27eb0378a74e89ac196cbbefeeffea"
+content-hash = "b9992b58f505b297a099abda504337cc6a7dae5f0291e63c9ae8da725fda63f3"
 
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 ]
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+]
+testfixtures = [
+    {file = "testfixtures-6.17.1-py2.py3-none-any.whl", hash = "sha256:9ed31e83f59619e2fa17df053b241e16e0608f4580f7b5a9333a0c9bdcc99137"},
+    {file = "testfixtures-6.17.1.tar.gz", hash = "sha256:5ec3a0dd6f71cc4c304fbc024a10cc293d3e0b852c868014b9f233203e149bda"},
+]
+"testing.common.database" = [
+    {file = "testing.common.database-2.0.3-py2.py3-none-any.whl", hash = "sha256:e3ed492bf480a87f271f74c53b262caf5d85c8bc09989a8f534fa2283ec52492"},
+    {file = "testing.common.database-2.0.3.tar.gz", hash = "sha256:965d80b2985315325dc358c3061b174a712f4d4d5bf6a80b58b11f9a1dd86d73"},
+]
+"testing.postgresql" = [
+    {file = "testing.postgresql-1.3.0-py2.py3-none-any.whl", hash = "sha256:1b41daeb98dfc8cd4a584bb91e8f5f4ab182993870f95257afe5f1ba6151a598"},
+    {file = "testing.postgresql-1.3.0.tar.gz", hash = "sha256:8e1a69760369a7a8ffe63a66b6d95a5cd82db2fb976e4a8f85ffd24fbfc447d8"},
+]
+toml = [
+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
+]
+typed-ast = [
+    {file = "typed_ast-1.4.3-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:2068531575a125b87a41802130fa7e29f26c09a2833fea68d9a40cf33902eba6"},
+    {file = "typed_ast-1.4.3-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:c907f561b1e83e93fad565bac5ba9c22d96a54e7ea0267c708bffe863cbe4075"},
+    {file = "typed_ast-1.4.3-cp35-cp35m-manylinux2014_aarch64.whl", hash = "sha256:1b3ead4a96c9101bef08f9f7d1217c096f31667617b58de957f690c92378b528"},
+    {file = "typed_ast-1.4.3-cp35-cp35m-win32.whl", hash = "sha256:dde816ca9dac1d9c01dd504ea5967821606f02e510438120091b84e852367428"},
+    {file = "typed_ast-1.4.3-cp35-cp35m-win_amd64.whl", hash = "sha256:777a26c84bea6cd934422ac2e3b78863a37017618b6e5c08f92ef69853e765d3"},
+    {file = "typed_ast-1.4.3-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:f8afcf15cc511ada719a88e013cec87c11aff7b91f019295eb4530f96fe5ef2f"},
+    {file = "typed_ast-1.4.3-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:52b1eb8c83f178ab787f3a4283f68258525f8d70f778a2f6dd54d3b5e5fb4341"},
+    {file = "typed_ast-1.4.3-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:01ae5f73431d21eead5015997ab41afa53aa1fbe252f9da060be5dad2c730ace"},
+    {file = "typed_ast-1.4.3-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:c190f0899e9f9f8b6b7863debfb739abcb21a5c054f911ca3596d12b8a4c4c7f"},
+    {file = "typed_ast-1.4.3-cp36-cp36m-win32.whl", hash = "sha256:398e44cd480f4d2b7ee8d98385ca104e35c81525dd98c519acff1b79bdaac363"},
+    {file = "typed_ast-1.4.3-cp36-cp36m-win_amd64.whl", hash = "sha256:bff6ad71c81b3bba8fa35f0f1921fb24ff4476235a6e94a26ada2e54370e6da7"},
+    {file = "typed_ast-1.4.3-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:0fb71b8c643187d7492c1f8352f2c15b4c4af3f6338f21681d3681b3dc31a266"},
+    {file = "typed_ast-1.4.3-cp37-cp37m-manylinux1_i686.whl", hash = "sha256:760ad187b1041a154f0e4d0f6aae3e40fdb51d6de16e5c99aedadd9246450e9e"},
+    {file = "typed_ast-1.4.3-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:5feca99c17af94057417d744607b82dd0a664fd5e4ca98061480fd8b14b18d04"},
+    {file = "typed_ast-1.4.3-cp37-cp37m-manylinux2014_aarch64.whl", hash = "sha256:95431a26309a21874005845c21118c83991c63ea800dd44843e42a916aec5899"},
+    {file = "typed_ast-1.4.3-cp37-cp37m-win32.whl", hash = "sha256:aee0c1256be6c07bd3e1263ff920c325b59849dc95392a05f258bb9b259cf39c"},
+    {file = "typed_ast-1.4.3-cp37-cp37m-win_amd64.whl", hash = "sha256:9ad2c92ec681e02baf81fdfa056fe0d818645efa9af1f1cd5fd6f1bd2bdfd805"},
+    {file = "typed_ast-1.4.3-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:b36b4f3920103a25e1d5d024d155c504080959582b928e91cb608a65c3a49e1a"},
+    {file = "typed_ast-1.4.3-cp38-cp38-manylinux1_i686.whl", hash = "sha256:067a74454df670dcaa4e59349a2e5c81e567d8d65458d480a5b3dfecec08c5ff"},
+    {file = "typed_ast-1.4.3-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:7538e495704e2ccda9b234b82423a4038f324f3a10c43bc088a1636180f11a41"},
+    {file = "typed_ast-1.4.3-cp38-cp38-manylinux2014_aarch64.whl", hash = "sha256:af3d4a73793725138d6b334d9d247ce7e5f084d96284ed23f22ee626a7b88e39"},
+    {file = "typed_ast-1.4.3-cp38-cp38-win32.whl", hash = "sha256:f2362f3cb0f3172c42938946dbc5b7843c2a28aec307c49100c8b38764eb6927"},
+    {file = "typed_ast-1.4.3-cp38-cp38-win_amd64.whl", hash = "sha256:dd4a21253f42b8d2b48410cb31fe501d32f8b9fbeb1f55063ad102fe9c425e40"},
+    {file = "typed_ast-1.4.3-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:f328adcfebed9f11301eaedfa48e15bdece9b519fb27e6a8c01aa52a17ec31b3"},
+    {file = "typed_ast-1.4.3-cp39-cp39-manylinux1_i686.whl", hash = "sha256:2c726c276d09fc5c414693a2de063f521052d9ea7c240ce553316f70656c84d4"},
+    {file = "typed_ast-1.4.3-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:cae53c389825d3b46fb37538441f75d6aecc4174f615d048321b716df2757fb0"},
+    {file = "typed_ast-1.4.3-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:b9574c6f03f685070d859e75c7f9eeca02d6933273b5e69572e5ff9d5e3931c3"},
+    {file = "typed_ast-1.4.3-cp39-cp39-win32.whl", hash = "sha256:209596a4ec71d990d71d5e0d312ac935d86930e6eecff6ccc7007fe54d703808"},
+    {file = "typed_ast-1.4.3-cp39-cp39-win_amd64.whl", hash = "sha256:9c6d1a54552b5330bc657b7ef0eae25d00ba7ffe85d9ea8ae6540d2197a3788c"},
+    {file = "typed_ast-1.4.3.tar.gz", hash = "sha256:fb1bbeac803adea29cedd70781399c99138358c26d05fcbd23c13016b7f5ec65"},
+]
+typing-extensions = [
+    {file = "typing_extensions-3.10.0.0-py2-none-any.whl", hash = "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497"},
+    {file = "typing_extensions-3.10.0.0-py3-none-any.whl", hash = "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"},
+    {file = "typing_extensions-3.10.0.0.tar.gz", hash = "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342"},
+]
 urllib3 = [
     {file = "urllib3-1.26.5-py2.py3-none-any.whl", hash = "sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c"},
     {file = "urllib3-1.26.5.tar.gz", hash = "sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098"},
@@ -659,3 +1933,7 @@ werkzeug = [
     {file = "Werkzeug-1.0.1-py2.py3-none-any.whl", hash = "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43"},
     {file = "Werkzeug-1.0.1.tar.gz", hash = "sha256:6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c"},
 ]
+zipp = [
+    {file = "zipp-3.4.1-py3-none-any.whl", hash = "sha256:51cb66cc54621609dd593d1787f286ee42a5c0adbb4b29abea5a63edc3e03098"},
+    {file = "zipp-3.4.1.tar.gz", hash = "sha256:3607921face881ba3e026887d8150cca609d517579abe052ac81fc5aeffdbd76"},
+]
diff --git a/pyproject.toml b/pyproject.toml
index b742893..2582378 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,8 +26,7 @@ argparse = "^1.0.10"
 dynaconf = "^3.0.0"
 
 [tool.poetry.dev-dependencies]
-sphinx = "^3.0"
-sphinx-autodoc-typehints = "^1.7"
+aleksis-builddeps = "*"
 
 [tool.poetry.scripts]
 rwa-support-sessionservice = 'rwa.support.sessionservice.service:main'
diff --git a/rwa/support/sessionservice/lock.py b/rwa/support/sessionservice/lock.py
index b4e384c..49be2f5 100644
--- a/rwa/support/sessionservice/lock.py
+++ b/rwa/support/sessionservice/lock.py
@@ -26,13 +26,13 @@
 import os
 import tempfile
 
-lock_dir_path = os.path.join(tempfile.gettempdir(), "rwa.support.sessionservice")
-lock_file_path = os.path.join(lock_dir_path, "rwa.support.sessionservice.lock")
+TEMP_DIR_PATH = os.path.join(tempfile.gettempdir(), "rwa.support.sessionservice")
+lock_file_path = os.path.join(TEMP_DIR_PATH, "rwa.support.sessionservice.lock")
 
 
 def lock():
     """Create lock file."""
-    os.makedirs(lock_dir_path, exist_ok=True)
+    os.makedirs(TEMP_DIR_PATH, exist_ok=True)
     with open(lock_file_path, "w") as f:
         f.write("lock")
 
@@ -48,3 +48,7 @@ def unlock():
         os.remove(lock_file_path)
     except FileNotFoundError:
         pass
+
+
+# Always ensure temp dir
+os.makedirs(TEMP_DIR_PATH, exist_ok=True)
diff --git a/rwa/support/sessionservice/service.py b/rwa/support/sessionservice/service.py
index ae634c8..c50da26 100755
--- a/rwa/support/sessionservice/service.py
+++ b/rwa/support/sessionservice/service.py
@@ -28,12 +28,10 @@
 import argparse
 import json
 import logging
-import os
 import signal
-import tempfile
 import time
 from threading import Thread
-from typing import Union, Any
+from typing import Union
 
 import dbus
 import dbus.mainloop.glib
@@ -58,9 +56,7 @@ class RWASupportSessionService(dbus.service.Object):
     :param mockup_mode: Starts the service in mock up mode
     """
 
-    def __init__(
-        self, loop: GLib.MainLoop, mockup_mode: bool = False, one_time: bool = False
-    ):
+    def __init__(self, loop: GLib.MainLoop, mockup_mode: bool = False, one_time: bool = False):
         self.loop = loop
         self.mockup_mode = mockup_mode
         self.one_time = one_time
@@ -102,14 +98,15 @@ class RWASupportSessionService(dbus.service.Object):
         """
         if ALLOW_ONLY_ONE_SESSION and len(self.sessions.values()) > 0:
             logging.warning(
-                "There is already one session running and the service is configured to allow only one "
+                "There is already one session running and the service "
+                "is configured to allow only one "
                 "session, so this session won't be started."
             )
             return json.dumps({"status": "error", "type": "multiple"})
 
         # Start session
         try:
-            session = Session(self.trigger_service.port, mockup_mode)
+            session = Session(self.trigger_service.port, self.mockup_mode)
 
             # Add session to sessions list
             self.sessions[session.pid] = session
@@ -120,9 +117,7 @@ class RWASupportSessionService(dbus.service.Object):
             return_json = session.client_meta
             return_json["status"] = "success"
 
-            logging.info(
-                f"New session #{session.pid} was started with meta {return_json}."
-            )
+            logging.info(f"New session #{session.pid} was started with meta {return_json}.")
 
             return json.dumps(return_json)
         except ConnectionError:
@@ -130,7 +125,9 @@ class RWASupportSessionService(dbus.service.Object):
 
         return json.dumps({"status": "error", "type": "connection"})
 
-    @dbus.service.method("org.ArcticaProject.RWASupportSessionService", in_signature="i", out_signature="s")
+    @dbus.service.method(
+        "org.ArcticaProject.RWASupportSessionService", in_signature="i", out_signature="s"
+    )
     def status(self, pid: int) -> str:
         """Return the status of a session.
 
@@ -158,14 +155,17 @@ class RWASupportSessionService(dbus.service.Object):
         """
         return self._get_status(pid)
 
-    @dbus.service.method("org.ArcticaProject.RWASupportSessionService", in_signature="i", out_signature="s")
+    @dbus.service.method(
+        "org.ArcticaProject.RWASupportSessionService", in_signature="i", out_signature="s"
+    )
     def refresh_status(self, pid: int) -> str:
-        """Same as :meth:`status`, but updates status from RWA.WebApp before returning it here.
-        """
+        """Update status from WebApp before returning it here like :meth:`status`."""
         self._update_session(pid)
         return self._get_status(pid)
 
-    @dbus.service.method("org.ArcticaProject.RWASupportSessionService", in_signature="i", out_signature="s")
+    @dbus.service.method(
+        "org.ArcticaProject.RWASupportSessionService", in_signature="i", out_signature="s"
+    )
     def stop(self, pid: int) -> str:
         """Stop a remote session.
 
@@ -200,7 +200,6 @@ class RWASupportSessionService(dbus.service.Object):
 
     def _update_session(self, pid: int):
         """Update the status of a session."""
-
         try:
             session = self.sessions[pid]
         except KeyError:
@@ -238,7 +237,7 @@ class RWASupportSessionService(dbus.service.Object):
         if self.one_time:
             self._stop_all()
 
-    def _trigger(self, session_id: int,  data: dict, method: str = "trigger") -> Union[dict, bool]:
+    def _trigger(self, session_id: int, data: dict, method: str = "trigger") -> Union[dict, bool]:
         """Trigger a specific session via trigger token."""
         logging.info(f"Triggered with session ID {session_id} and {data}")
 
@@ -271,7 +270,10 @@ class RWASupportSessionService(dbus.service.Object):
 
 
 def str2bool(v: Union[str, bool, int]) -> bool:
-    """Return true or false if the given string can be interpreted as a boolean otherwise raise an exception."""
+    """Return true or false if the given string can be interpreted as a boolean.
+
+    If it fails, raise an exception.
+    """
     if isinstance(v, bool):
         return v
     if v.lower() in ("yes", "true", "t", "y", "1", 1):
@@ -281,6 +283,7 @@ def str2bool(v: Union[str, bool, int]) -> bool:
     else:
         raise argparse.ArgumentTypeError("Boolean value expected.")
 
+
 def main():
     # Check for lock file
     if is_locked():
@@ -298,7 +301,8 @@ def main():
         nargs="?",
         const=True,
         default=False,
-        help="Activates mock up mode. Acts like the real session service but don't do changes or call RWA.",
+        help="Activates mock up mode. Acts like the real session service "
+        "but don't do changes or call RWA.",
     )
     parser.add_argument(
         "-o",
@@ -315,18 +319,16 @@ def main():
     one_time = args.one_time
 
     if mockup_mode:
-        logging.warning(
-            "All API responses are faked and should NOT BE USED IN PRODUCTION!"
-        )
+        logging.warning("All API responses are faked and should NOT BE USED IN PRODUCTION!")
 
     dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
 
     loop = GLib.MainLoop()
-    object = RWASupportSessionService(loop, mockup_mode, one_time)
+    service_object = RWASupportSessionService(loop, mockup_mode, one_time)
 
     def signal_handler(sig, frame):
         logging.info("Service was terminated.")
-        object._stop_all()
+        service_object._stop_all()
 
     signal.signal(signal.SIGINT, signal_handler)
 
@@ -337,4 +339,4 @@ def main():
 
 
 if __name__ == "__main__":
-   main()
\ No newline at end of file
+    main()
diff --git a/rwa/support/sessionservice/session.py b/rwa/support/sessionservice/session.py
index 1dfb6bb..d6dbc82 100644
--- a/rwa/support/sessionservice/session.py
+++ b/rwa/support/sessionservice/session.py
@@ -24,18 +24,18 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 import os
-import random
 import secrets
 import signal
 import string
-import subprocess
-from typing import Dict, Union, Any
+import subprocess  # noqa
+from typing import Dict, Union
 
 import port_for
 import psutil
 import requests
 
 from .config import settings
+from .lock import TEMP_DIR_PATH
 from .log import logging
 from .vnc import run_vnc, save_password
 
@@ -50,17 +50,13 @@ logging.info(f"Load API config: {API_SERVER}")
 
 
 def random_digits(length: int):
-    return "".join(random.choice(string.digits) for _ in range(length))
+    return "".join(secrets.choice(string.digits) for _ in range(length))
 
 
 def get_desktop_dir():
     """Get desktop directory from xdg vars."""
-    return (
-        subprocess.check_output(["xdg-user-dir", "DESKTOP"])
-        .decode()
-        .strip()
-        .replace("\n", "")
-    )
+    output = subprocess.check_output(["xdg-user-dir", "DESKTOP"]).decode()  # noqa
+    return output.strip().replace("\n", "")
 
 
 class Session:
@@ -94,6 +90,12 @@ class Session:
     def _api_headers(self) -> Dict[str, str]:
         return {"Authorization": f"Token {self.api_token}"}
 
+    @property
+    def _mock_lock_file_path(self) -> str:
+        return os.path.join(
+            TEMP_DIR_PATH, f"{self.ws_port}-{self.vnc_port}-{self.ws_pid}-{self.vnc_pid}.lock",
+        )
+
     def _generate_password(self):
         """Generate password for x11vnc and save it."""
         self.password = secrets.token_urlsafe(20)
@@ -125,8 +127,7 @@ class Session:
             logging.info("The lock file for mocking a VNC server has been created.")
 
             # Create a temporary file to indicate that this process is still 'Running'
-            filename = f"/tmp/rwa/{str(self.ws_port) + str(self.vnc_port) + str(self.ws_pid) + str(self.vnc_pid)}.lock"
-            new_file = open(filename, "w")
+            new_file = open(self._mock_lock_file_path, "w")
             new_file.write("this session is running")
 
     def _register_session(self):
@@ -145,7 +146,8 @@ class Session:
                 raise ConnectionError()
 
             logging.info(
-                f"The session has been registered in RWA.Support.WebApp with status code {r.status_code} and response {r.content.decode()}."
+                "The session has been registered in RWA.Support.WebApp "
+                f"with status code {r.status_code} and response {r.content.decode()}."
             )
 
             if r.status_code != 200:
@@ -156,10 +158,10 @@ class Session:
             self.web_url = self.meta["url"]
             self.api_token = self.meta["token"]
         else:
-            logging.info(f"The session has pretended that he had created a session.")
+            logging.info("The session has pretended that he had created a session.")
             self.meta = {}
             self.session_id = int(random_digits(10))
-            self.web_url = "http://example.com:" + random_digits(5) + "/app/rwasupport/test/"
+            self.web_url = f"http://example.com:{random_digits(5)}/app/rwasupport/test/"
             self.api_token = secrets.token_urlsafe(10)
         self.pin = int(random_digits(4))
 
@@ -174,8 +176,8 @@ class Session:
                 "trigger_token": self.trigger_token,
             }
 
-
         return False
+
     def pull(self):
         """Update status: Get status from Django."""
         if not self.mockup_session:
@@ -185,7 +187,8 @@ class Session:
                 )
 
                 logging.info(
-                    f"The session has received its status from RWA.Support.WebApp with status code {r.status_code} and response {r.content.decode()}."
+                    "The session has received its status from RWA.Support.WebApp "
+                    f"with status code {r.status_code} and response {r.content.decode()}."
                 )
             except requests.ConnectionError:
                 pass
@@ -208,10 +211,8 @@ class Session:
 
     def _do_file_job(self, job):
         """Download a file from server to the user's desktop."""
-        logging.info(
-            f"The session has received a file job and is downloading it now ({job}):"
-        )
-        subprocess.Popen(["wget", job["file"], "-P", self.desktop_dir])
+        logging.info(f"The session has received a file job and is downloading it now ({job}):")
+        subprocess.Popen(["wget", job["file"], "-P", self.desktop_dir])  # noqa
         self._mark_job_as_done(job)
 
     def _mark_job_as_done(self, job):
@@ -219,12 +220,11 @@ class Session:
         self.done_jobs.append(job["job_id"])
         try:
             r = requests.post(
-                MARK_JOB_AS_DONE_URL,
-                params={"id": job["job_id"]},
-                headers=self._api_headers,
+                MARK_JOB_AS_DONE_URL, params={"id": job["job_id"]}, headers=self._api_headers,
             )
             logging.info(
-                f"The session has marked the job {job} as done in RWA.Support.WebApp with status code {r.status_code} and response {r.content.decode()}."
+                f"The session has marked the job {job} as done in RWA.Support.WebApp "
+                f"with status code {r.status_code} and response {r.content.decode()}."
             )
         except requests.ConnectionError:
             pass
@@ -237,9 +237,8 @@ class Session:
         """Stop session and clean up."""
         if self.mockup_session:
             logging.info("Mock session has been stopped by deleting its lock file.")
-            filename = f"/tmp/rwa/{str(self.ws_port) + str(self.vnc_port) + str(self.ws_pid) + str(self.vnc_pid)}.lock"
-            if os.path.isfile(filename):
-                os.remove(filename)
+            if os.path.isfile(self._mock_lock_file_path):
+                os.remove(self._mock_lock_file_path)
 
             # Delete self
             del self
@@ -268,7 +267,8 @@ class Session:
                     STOP_URL, params={"id": self.session_id}, headers=self._api_headers
                 )
                 logging.info(
-                    f"The stop action has been registered in RWA.Support.WebApp with status code {r.status_code} and response {r.content.decode()}."
+                    "The stop action has been registered in RWA.Support.WebApp "
+                    f"with status code {r.status_code} and response {r.content.decode()}."
                 )
             except requests.ConnectionError:
                 pass
@@ -282,8 +282,7 @@ class Session:
     def vnc_process_running(self) -> bool:
         """Check if the VNC process is still running."""
         if self.mockup_session:
-            filename = f"/tmp/rwa/{str(self.ws_port) + str(self.vnc_port) + str(self.ws_pid) + str(self.vnc_pid)}.lock"
-            return os.path.isfile(filename)
+            return os.path.isfile(self._mock_lock_file_path)
 
         if self.vnc_pid in psutil.pids():
             p = psutil.Process(self.vnc_pid)
diff --git a/rwa/support/sessionservice/trigger.py b/rwa/support/sessionservice/trigger.py
index fa9734a..a9643f7 100644
--- a/rwa/support/sessionservice/trigger.py
+++ b/rwa/support/sessionservice/trigger.py
@@ -24,11 +24,11 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 import threading
-from typing import Any, Callable, Optional, Union
+from typing import Callable, Optional, Union
 from wsgiref.simple_server import make_server
 
 import port_for
-from flask import Flask, abort, request, jsonify
+from flask import Flask, abort, jsonify, request
 
 
 class TriggerServerThread(threading.Thread):
@@ -68,8 +68,7 @@ class TriggerServerThread(threading.Thread):
             except (ValueError, TypeError):
                 return abort(404)
 
-
-        self.srv = make_server("0.0.0.0", self.port, app)
+        self.srv = make_server("0.0.0.0", self.port, app)  # noqa
         self.ctx = app.app_context()
         self.ctx.push()
 
diff --git a/rwa/support/sessionservice/vnc.py b/rwa/support/sessionservice/vnc.py
index 1725532..f41efce 100644
--- a/rwa/support/sessionservice/vnc.py
+++ b/rwa/support/sessionservice/vnc.py
@@ -24,18 +24,20 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 import os
-import subprocess
+import secrets
+import subprocess  # noqa
 from typing import Dict
-from uuid import uuid4
 
 import port_for
 
+from .lock import TEMP_DIR_PATH
+
 
 def save_password(pw: str) -> str:
     """Save password in x11vnc format in temporary directory."""
-    filename = f"/tmp/rwa/{uuid4()}.pw"
-    os.makedirs("/tmp/rwa/", exist_ok=True)
-    p = subprocess.Popen(["x11vnc", "-storepasswd", f"{pw}", filename])
+    filename = os.path.join(TEMP_DIR_PATH, f"{secrets.token_urlsafe(20)}.pw")
+    os.makedirs(TEMP_DIR_PATH, exist_ok=True)
+    p = subprocess.Popen(["x11vnc", "-storepasswd", f"{pw}", filename])  # noqa
     p.communicate()
     return filename
 
@@ -46,10 +48,10 @@ def run_vnc(pw_filename: str) -> Dict[str, Dict[str, int]]:
     port_vnc = port_for.select_random()
 
     # Start VNC process
-    p = subprocess.Popen(["x11vnc", "-rfbauth", pw_filename, "-rfbport", f"{port_vnc}"])
+    p = subprocess.Popen(["x11vnc", "-rfbauth", pw_filename, "-rfbport", f"{port_vnc}"])  # noqa
 
     # Start websockify
-    p2 = subprocess.Popen(f"websockify {port} 127.0.0.1:{port_vnc}", shell=True,)
+    p2 = subprocess.Popen(["websockify", str(port), f"127.0.0.1:{port_vnc}"])  # noqa
 
     return {
         "ws": {"pid": p2.pid, "port": port},
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..db4d9c2
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,73 @@
+[tox]
+skipsdist = True
+skip_missing_interpreters = true
+envlist = py37,py38,py39
+
+[testenv]
+whitelist_externals = poetry
+		      sudo
+skip_install = true
+envdir = {toxworkdir}/globalenv
+commands_pre =
+     poetry install
+commands =
+    poetry run pytest --cov=. {posargs} rwa/
+
+[testenv:lint]
+commands =
+    poetry run black --check --diff rwa/
+    poetry run isort -c --diff --stdout rwa/
+    poetry run flake8 {posargs} rwa/
+
+[testenv:security]
+commands =
+    poetry show --no-dev
+    poetry run safety check --full-report
+
+[testenv:build]
+commands_pre =
+    poetry install
+commands = poetry build
+
+[testenv:docs]
+commands = poetry run make -C docs/ html {posargs}
+
+[testenv:reformat]
+commands =
+    poetry run isort rwa/
+    poetry run black rwa/
+
+[flake8]
+max_line_length = 100
+exclude = tests
+ignore = BLK100,E203,E231,W503,D100,D101,D102,D103,D104,D105,D106,D107,RST215,RST214,F821,F841,S106,T100,T101,DJ05
+rst-directives =
+    autosummary,data,currentmodule,deprecated,
+    glossary,moduleauthor,plot,testcode,
+    versionadded,versionchanged,
+rst-roles =
+    attr,class,func,meth,mod,obj,ref,term,
+
+[isort]
+profile = black
+line_length = 100
+default_section = THIRDPARTY
+known_first_party = rwa
+sections = FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER
+
+[mypy]
+python_version = 3.9
+platform = linux
+show_column_numbers = True
+follow_imports = skip
+ignore_missing_imports = True
+cache_dir = /dev/null
+
+[pytest]
+junit_family = legacy
+
+[coverage:run]
+omit =
+    */tests/*
+    .tox/*
+    .venv/*