Check that ACRA is catching all uncaught exceptions
We've had two reports recently of crashes that don't seem to have been caught by ACRA. @ernir reported a crash in #516 (closed) where the background service disappeared (possibly killed by the OS due to resource limits) without the crash report dialog appearing, and @grote reported that an IllegalArgumentException on a background thread caused by a blog post exceeding MAX_BODY_LENGTH caused a crash without a stacktrace.