Fixed error reloading tweak module in cherrymodel
fixed #295, database is automatically updated after setup in browser
removed opensearch plugin (too much hassle, no use), closes #287
fixed #266, playlist delete button is only shown for admins and playlist owners
Merge branch 'devel' into database-squashed-pullrequest

Conflicts:
	cherrymusicserver/__init__.py
	cherrymusicserver/cherrymodel.py