Overview of changes in ayatana-indicator-notifications 0.4.0

  - Convert into Ayatana Indicator, original code was Ubuntu Indicator,obtained
    from: https://code.launchpad.net/~jconti/recent-notifications/indicator
  - Move translation management to https://hosted.weblate.org
  - Translations added: Lithuanian, Russian, Romanian, Ukrainian, Swedish,
    Norwegian Bokmål, Estonian, and Belarusian. Thanks to the i18n folks on
    hosted.weblate.org!!!