Fixed tab float issue when multiple channel tabs.
Embed Youtube video with proper HTTP/HTTPS protocol or else it will fail with http on https
Fixed Channel listing for Small clients (iPhone / Tablet) looking wrong, and added back close channel button
Updated chat styles with less padding, more compact and easier to scan.
Changed Gravatar URL to HTTPS to fix mixed content warnings.
Merge branch 'alfajango' of github.com:alfajango/kandan into alfajango

Conflicts:
	app/assets/stylesheets/layout/_nav.sass