slight improvements to imgur content provider to not try to imagify /a/ links (album), to use https on imgur rather than a proxy, and to allow for https links to be used.  Still breaks on things like imgur.com/random and imgur.com/gallery/myAlbumName (as we can't differentiate these from valid images without using the imgur API)
Update client-sent messages with server time

Resolves #950
Update showUserInfo

Only request gravatar if user has hash & perform basic validation of
response. Also fixes showUsersOwnedRoomList bug.
fix jshint warnings, remove dead pinnedWindows code, fix js code issue with @ing in empty room resulting in @undefined, feature detection for window.console
Updated SignalR and katana.
Updated EF