iOS: Fix bug preventing loading indicator from being dismissed properly for HTML interstitials; fix bug which allows the browser controller to continue loading after it has been dismissed
Android: Correctly reflect MRAID capabilities in ad request
iOS: Fix issue #84 (crash caused by un-implemented delegate method -overlayDidAppear)
Android: Add ability to force refresh ad units
Android: Fix bug in which un-implemented custom events could disrupt the mediation waterfall
Merge remote-tracking branch 'mopub/master'

Conflicts:
	Android/mopub-android-sdk/.classpath
Updated admob SDK version