IE11 support

There are 28 failing assertions in the master branch in IE11.
I have still some questions regarding bower and grunt's copy.

In addition to having these questions, the jQuery 1.4.4, our default jQuery in tests and examples, is vendored, currently.

So, how about, for this merge, we let the jQuery.browser be vendored as well and, on a different branch, we'll have all the things bowered properly?

I don't want to slow this branch down.