This is a big change, but should change nothing except the sizes of some
files and where they all are.
There are no more ext.multimediaViewer strings ANYWHERE, so let's keep
it that way. :)
Change-Id: Ic0892f5894700938bfa01f3f9bc8e5ab8276eb72
Also fixes a bug where we didn't clear our arrow key listeners, and VE
would sometimes see lightbox loads accidentally.
+tests for .empty()
Bug: 58107
Change-Id: Ica8326891b2da1f94966dbe72c28e878934ca64f
Third try, merged latest changes and added a test.
Run loading test against a wikipedia.org image.
Change-Id: I4e5a137e0f6dbedc45ec2c8393590919e23a26be