gtkui: fixed scrolling when resizing album art column
gtkui: improved performance when resizing album art column
gtkui: single click in album art column selects group and double click plays first track of group
fixed crash after last track if "stop after cur album" is enabled
Merge pull request #4 from popoffka/master

Fix crash in stop_after_album_check if next=0
Merge branch 'wander'
Merge pull request #3 from cboxdoerfer/master

gtkui: improve performance of album art drawing in playlist
gtkui: when unknown widget is encountered (e.g. widget plugin doesn't work or missing), layout is not dropped, but placeholder widget will be inserted, to preserve the layout
junklib: UFID support WIP
lastfm: added an option to enable/disable sending musicbrainz track id
lastfm: option to submit tracks shorter than 30 sec
changed plugin init order, so that the selected GUI plugin is always loaded 1st
junklib: added musicbrainz UFID support
artwork: added include strdupa.h to fix build on freebsd (bug #1086)
updated/improved/added licensing info in many plugins, added COPYING files, some plugins got upgraded from GPL to ZLIB
junklib: fixed handlid invalid UFID in id3v2
mp3: fixed mp3 parser bug which resulted in wrong duration
gme: android build fix
configure --help fix for gtk2/3
removed unused fft impls from supereq