Refactor base.html and app.html
Merge pull request #418 from javierluraschi/RefactorBaseApp

Refactor base.html and app.html
removed bundles directory
merged upstream changes
Merge pull request #425 from percyliang/master

removed bundles directory
Make changes to track codalab-cli.
Merge pull request #426 from cpoulain/master

Make changes to track codalab-cli.