OTHER: Cleanup NowPlaying.

Removed the idle timeout since it never worked as intended and
fixing it in a platform independent way was kind of impossible.

Fullscreen is now activated via menu and playback accelerators
are now working in fullscreen mode. A bit of a hack since I
couldn't figure out how to propagate the keyevent to the
main window accelerator group. Should be fixed some day.
OTHER: Remove broken accelerator for connect dialog.
OTHER: Add accelerators to playback button tooltips.
OTHER: Fix typo in equalizer widget.
OTHER: Add 'Frank Duckhorn' to about dialog.
OTHER: Update AUTHORS a bit.
OTHER: Add proper dist scripts.
OTHER: Add copyright year updating script.
RELEASE: 0.8.0
Merge commit '27f68f0' into bb

Conflicts:
	data/ui/main_menu.xml
	src/abraca-application.vala
Merge commit 'ea8f44d' into bb

Conflicts:
	data/ui/main_menu.xml
	src/abraca-equalizer-widget.vala
Merge branch 'master' into bb