Queue Manager: Only show scrollbars if necessary.
GTK3 uses 'GTK_POLICY_AUTOMATIC' by default, but GTK2 does not.
Preferences window: Increase wrap width for categories.
Fixes the wrong wrapping of 'Wiedergabeliste' ('Playlist') with GTK2.
libaudqt: Support selecting multiple files in file dialog.
Revert "libaudqt: Support selecting multiple files in file dialog."

This reverts commit 53a5e930c4cfc92c611a42e7dcddc35ce5dd8910.
po: German translation update.
libaudgui: Align check button in 'Jump to Song' dialog to the left.
All other buttons are right-aligned.
The same layout is used in the file chooser dialog.
libaudqt: Use already existing translations.
Add album artist support.  Closes: #238.
libaudtag: Fix replay gain parsing for ID3 tags (regression in a23126666f02).
Make TransportPlugin::fopen() a virtual method.
Combine OutputPlugin::buffer_free() and OutputPlugin::write_audio().
Let output plugins track only delay, not total output time.
Preferences window: Never show a horizontal scrollbar.
Occurred with GTK2 under Gnome 3 and German localization.
Add a button to the infowin to move to the next song.
Reset focus to title entry when moving infowin to next song.
Fix blank fields being shown in infopopup.
Infopopup improvements:
* Use a visual style similar to the GTKUI infoarea.
* Align "Title", "Artist", etc. labels to the right.
* Disable progress bar by default since it doesn't fit in well.
* Don't show default "no album art" icon.
* Wait until "art ready" before displaying to prevent flickering.
* Fix positioning in multi-monitor setups.
Merge branch 'master' into gtk3

Conflicts:
	src/libaudgui/infopopup.cc
	src/libaudgui/ui_jumptotrack.cc
	src/libaudgui/util.cc