Cleaning up the interface and making it more like IPython.
Update images for toolbar in code cell.
Disable authorization for kernel connections
Adds back colabtools js libraries

Adds files that got deleted in UI update
Removes analytics
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.
Modifies colabtools

For some reason the json library is missing the class JSONDecoder, so I replace json.JSONDecoder.decode with json.loads.
Remove comments button
Change share message
Updating sharing message, take 2
Adds error dialog if cookies are disabled
Better detection of API load failure
Removes logging error

Modifies some code that didn't track a change from IPython 2.0 to 2.1, and was causing a harmless but annoying error.
Fixes to css to tighten UI and to img location in code cell.
Changes spacing to 8px
Changes code cell background color.
Fixing alignment issues.
Fixes broken user icon

The code that ensures the uri scheme/protocol is set to https, was broken as it added https: to the uri string even if the uri already had a scheme/protocol set.  This code uses a new method where the uri is parsed, and its scheme/protocol is overriden to https.