release_20: fix crash on contextMenuEvent in AlarmTreeWidget when positioned outside an item

release_19: fix Sound::play calls loop() in Qt4 version

release_18: if qt version < 5 then use phonon for sound. 

release_17: removed dependency from System Tray. Two popups warn upon close event instead.

release_14: items ordered by Level (and time)
	    items color according to Level