chore($$raf) remove moz prefix for requestAnimationFrame

This drops support for Firefox 22 and older.

The moz-prefix is still supported, but there is an effort to drop it eventually:
https://bugzilla.mozilla.org/show_bug.cgi?id=909154

Closes #9577
chore(travis): run the build twice (BS and SL)

Temporarily run the each job twice:
- using BrowserStack
- using SauceLabs
docs(guide/Forms): added link to input type "date"

Closes #10415
WIP: perf(ngInclude): cache linkFns for each template

This is probably not the best way to do this but here is a working Proof of Concept.

See http://www.bennadel.com/blog/2738-using-ngrepeat-with-nginclude-hurts-performance-in-angularjs.htm