updated changelog and version number
whitespace [ci skip]
Read license from proper location (fixes #353)

[ci skip]
Link to GPL3 in error message (#353)

[ci skip]
highlighting playing track in playlist, closes #350
Merge branch 'devel' of github.com:devsnd/cherrymusic into devel
forgot to deploy changes for #350
implemented playlist sorting, closes #337
implemented searching in the playlist panel. closes #84 and closes #152
fixed in browser setup (didn't use bootstrap3 yet!)
disabling logout button when using auto-login, closes #329
reimplemented funny sentences, closes #351
improved wisdom style
updated to version 0.28.0