Housekeeping on angular - no version change (part 1 of ?)

Unifying with http://code.angularjs.org - see
https://github.com/cdnjs/cdnjs/pull/2693 for background, hat tip to
@willbutler.

Supplied, pre-made angular.min.js are smaller than existing copies on
cdnJS. Processed from 0.9.0 to 0.9.19 so far. More to follow.