Fixed flicker of pages.
Replaced spinner with notch.
Cloak inside.
Made form to show changable room name.
Cleaned up welcome screen of all the fuzz.
Merge branch 'better-welcome' of https://github.com/longsleep/spreed-webrtc into longsleep-better-welcome

Conflicts:
	static/css/main.min.css
Merge branch 'longsleep-better-welcome'