Get rid of the infinite spinner.

Close #798
Added reference to additional supported content providers
Merge pull request #802 from DavidChristiansen/patch-1

Added reference to additional supported content providers
Merge branch 'dev'

Conflicts:
	JabbR/Chat.js
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
fixed bad semicolon in chat.ui.js to, makes jshint happy
Added release notes
Update ReleaseNotes.md
Merge branch 'dev'

Conflicts:
	JabbR/Chat.ui.js
Merge branch 'dev'
Updated release notes
Update ReleaseNotes.md
Merge branch 'dev'
Added Screencast.com content provider
Fixed namespace of Screencast.com ContentProvider
Force https on screencast.com url's so we don't get a warning in the browser about insecure content mixing
Merge branch 'dev'
Merge pull request #877 from cmaish/master

Allow leavecommand to run on closed rooms (allow closing the tab of closed rooms)