Fix issue #7226101: Secure image capture takes 5 seconds to start

Mostly (turned off) debug output.  Main fix is to resume the next
activity if we are pausing while sleeping and the top activity is
not the now pausing activity.  Also helped things by fixing a problem
where removing a task would leave around dead destroy timeout
messages.

Change-Id: I9d550c216b4d7e2afe3d93553bb680cec41e2ed1