Added NoPlayTest, Tweaked MainActivityTest for OnceUX plugin

* int progress added as a way to definitively determine Playhead Position for Logs.
  * Progress event added in the setup method to allow all tests in MainActivityTest access to it.
* Tweaked testHideSeekControls in MainActivityTest.
* Removed programatically skipping ads.
* Added play event emitters to each test in MainActivityTest.
  * Remedied issue with wifi not turning back on for testAdDataReady in the MainActivityTest class
* NoPlayTest class created to determine if the Sample App is playing or pausing on its own.
Comments are very important in that they give the reader some insight into the intent of the author and a way to check for correctness by providing two perspectives that should agree: the comment and the code.  So it is well worth using complete sentences with correct punctuation for the benefit of the Reader.  That said, this is rarely done but if you choose to do it, your Readers will be better able to grok your code and resolve issues.  Plus, you will be a better QA Engineer for having done so.