Support python 2.6's string format and django 1.7 for StaticLiveServerTestCase
Updating tests to be more robust.

Updated test_toggle_switch_click to no longer try to test with the ProfilingPanel. The profiling panel wasn't consistent enough to return data for every run of the tests.
Updated test_show_toolbar_button to wait until the show button is displayed before running the logic of the tests.`