Unpin requirejs and bump minor versions

We originally pinned requirejs to 2.1.11 because it was causing problems loading partials; however, I am currently unable to duplicate that issue.

Additionally, compiling webview with requirejs 2.1.11 does cause an issue trying to load partials that appears to be fixed in 2.1.14.

@philschatz, @reedstrm: Can you both confirm this doesn't cause a problem loading partials in dev and does fix the issue in production?