improving test perf
Changes to unit tests in order to improve unit test performance. The main change
is to run animations at 20x normal speed, this is accomplished by having the
animation engine divide all delay/duration specifications by 20 and then in
order to have the tests still pass and such I have updated all the unit tests
which were attempting to coordinate with tests to use WinJS.UI._animationTestAdjustment()
in order to apply the same factor to their delays.

In a couple of places I also massaged tests which had needless delays. Clearly
there is more work which can be done, although on my machine this has already reduced
times from ~ 30 min to ~ 9 min.
Merge pull request #174 from spankyj/testperf2

Changes to unit tests in order to improve unit test performance.