Don't animate outputarea

Change the AnimatedZippy class used to animate expanding/contracting outputarea, to a Zippy class, as animations had a variety of bugs.
Add colapdeps to welcome.html

Unresolved dependenceis in welcome.html are solved by using the same colapdeps.js file.  This is a hack that gets around issues with uncompiled closure.
Update token passing code

Updates code for passing tokens from Chrome App to webview, to include OAuth scope as well as token.