enable downloading and building of UICatalog app from Apple
we don't need these python reference files anymore
Build app before running functional tests.
added an example of how to run server along with tests in the test file
comment out that test for now, it doesn't play nice in the current system
Queue concurrent sessions and handle them one by one.
Made sure it works either way: The cl interface won't be able to supply a callback.
adding support for implicit waits
test for implicit wait