Karma tweaks

Minor karma tweaks.

* Drop duplicate ng-html2js sections
* Add polyfill for bind so tests work under PhantomJS 1.9
I guess we might as well leave it. Wouldn't want it to cause issues in the future, and I don't think it's too much of a performance/readability issue leaving it there.
If you do think it would be much cleaner/faster/understandable to combine them into one line, make sure you put a line comment there, in case anyone has problems with it in the future. :wink: