* Added two abstract methods setSharedPreferences and
configureHostInfo to allow test classes extending
AbstractTestClass to set preferences or change the host info.
* Implemented a mock event server to test event server commands
* Implemented a handler to handle JSON input events over HTTP
* Fixed issue with opening drawer and Espresso not waiting for
when drawer was actually opened.
* Implemented new handlers for MockTcpServer to test
media control functions.
* Decreased delay for sending reponses in MockTcpServer from
1 sec to 100 ms. This was needed to prevent race conditions with
the progress bar that increases automatically once per second.