Initial version of OAuth authentication
Load user collections after login
And load user collections also after logout
Better config upgrade comment
Use host and port variables
Merge branch 'master' of github.com:musicbrainz/picard into oauth
Get username for the collection service
Dialog
Merge remote-tracking branch 'origin/master' into oauth

Conflicts:
	picard/__init__.py
	picard/const/locales.py
Fix config upgrade
Merge pull request #305 from lalinsky/oauth

PICARD-615: OAuth authentication