Collapsed NetIntentsHelper into EventServer

Removed NetIntentsHelper app completely.
Now the EventServer is an Android service, it can communicate directly with
the NotificationManager using Intent broadcasts, it can intercept activity
start intents, and it can start activities directly.

Change-Id: I9dab1da6362bd0ab326673511fa09aa04e1665c3
Fix CPU spike in event server

If the client socket disconnects in a particular way, the event server can get
stuck in the inner while loop where it reads protobuf messages in. The existing
error check for a null protobuf would break that iteration of the loop, but did
not break out of the loop itself.

Changed 'continue' to 'break' as a temporary fix. It really should throw an
exception, but this is good enough for now since I'm planning to rewrite the
event server pretty soon anyway.

Change-Id: Ic4f5a32beff2688a38bb373a882f70a477c4a75b