fix(ngInclude): only run anchorScroll after animation is done

[petebacondarwin]

We need to wait until animations have added the content to the document before
trying to autoscroll to anchors that may have been inserted.

I am a little unsure about how I refactored the tests to check for this issue.

Also, could someone check whether other things should be moved into the afterAnimation
handler, such as the $compile, the $emit or the $eval?

[IgorMinar]

I asked @jeffbcross to take this one over

[IgorMinar]

Jeff, please fix the tests to use animate mock and create a new commit that will make the same change to ngView.

[jeffbcross]

I amended Pete's commit with requested changes, and added ngView fix in a separate PR: #4801