Rename test app js file so it doesn't conflict with unit tests.
Don't set lockscreen message to undefined.
Add some properties to MockLockScreen.
Added paused attribute to MockAudio.

Unlike playing, paused is defined at:
http://www.whatwg.org/specs/web-apps/current-work/#dom-media-paused
Make MockLock return a request on set()
Make MockSettingsURL actually set its value on set().
WIP add tests for whereismyfox.