Implemented control panel applet and basic notifications

cpapplet/*
  * First implementation of the control panel page enabling the
    selection of teams for notifications

livescores.score.update.conf, icons/*
  * Created custom notification type including corresponding icons

src/*
  * Implemented notifications
Added BusyIndicator

qml/.../GamesOverviewPage.qml
  * Added a BusyIndicator for when the results are fetched
    initally