Updated 'index.html' to use Angular, sort, and filter.
Updated 'index.html' to use Angular, sort, and filter.

Added Angular 'ng-table' support to the index. This should help make sense of
build orders rather than the arbitrary JSON ordering that the current
index uses.

Also added a few other things, such as a filter field, a load indicator, and
moved static content hosting to the 'chromium-common' GS bucket.

R=agable@chromium.org, iannucci@chromium.org
BUG=384681

Review URL: https://codereview.chromium.org/450433004

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