Repairing the environment to allow ant to get at the brightcove classes.
Environment completed, setup and teardown methods created and implemented in two test classes.
Tweaking setup and teardown methods.
New TearDown method, completed AdOverlayLearnMoreCheck test class.

##Rationale

##Changed Files
UiAutomatorTest.java
* Finished tearDown method
AdOverlayLearnMoreCheck.java
* Changed names of utility methods to better reflect what it does.
* added conditionals to learnMoreChecker utility method to take into consideration all possibilities.
* finalized test method, added asserts
* introduced setUp and tearDown
* introduced playVideo utility method to initiate play in a video in conjunction with the setup.
* removed utility method learnMoreDecider, as it no longer made sense to have one test checking all three ad breaks.
* renamed test method to testLearnMoreCheckPrerolls
* added two new test methods testLearnMoreCheckMidrolls and testLearnMoreCheckPostRolls
AdOverlayLearnMoreCheck.java
AdOverlayPressLearnMore.java
* renamed to remove extranneous "AdOverlay" prefix