fixed playlist download links in devel (#228)

used the right branch this time...
Merge branch 'devel' of github-mine:devsnd/cherrymusic into devel
removed session lock release for fetch album art. this might fix #229
Merge branch 'devel' of github.com:devsnd/cherrymusic into devel
automatically resizing coverart, if imagemagick is installed. closes #213
merged bootstrap into devel
reduced font-size of oneliner
readded progress indicator
fixed progress screen style
readded session lock, but removed strange call to api_useroptions #229
Resized images are being cached. If no image is found, there is no wa dummy image for folders
adveanced search syntax not working when appending "!d" or "!f" instead of prepending fixed #226
Added client-side transcoding logging.
removed admin panel button for normal users closes #231
first version of a setup page #223
Improved transcoding behavior, Flash and HTML solutions are being used at the same time to support as many formats without transcoding as possible.
WORKAROUND: deactivated authentification for fetchalbumcover, closes #229
all api handlers can now be equipped with an boolean attribute "noauth". If set
to true, this will circumvent authentification.
reintroduced client error messages
changed error message position, because it broke the layout.
Removed configuration option playables. Playables are now determined by two factors:
1. It is assumed that all browsers can in one form or another play mp3 and ogg.
2. All other formats are also considered if transcoding is enabled and the appropriate decoding software installed