Make the video elements visible in the chat window.
CallView: throws if we don't give the good options to the view
ChatApp: should have a call view
Fix jshint issues
Construct view into app
Cleanup HTML for chat window
Merge pull request #95 from dmose/chatapp-view-update

Attaches call view to the appropriate DOM element and unhides it; paired with @tOkeshu
Merge pull request #94 from fqueze/chat-window-css

Make the video elements visible in the chat window., r=@dmose