1023 - Failing to check for null service onStart and onStop
When the app starts with <15% battery, it immediately gets notified and
then calls onStop before the service is created, and crashed on a null
pointer.
string changes: Sent -> All Sessions
Also, change another instance of the word observation to report
update Reporter to send flushed bundles to ObservedLocationsReceiver
removed GPS in ObservedLocationsReceiver
revert unrelated changes
Merge pull request #1031 from cascheberg/fix-points-overlay2

@cascheberg Reporter sends bundles to ObservedLocationsReceiver (and fix Airplane mode)
Merge pull request #1026 from garvankeeley/1023-check-null-service

1023 - Failing to check for null service onStart and onStop
Merge pull request #1030 from garvankeeley/1027-rename-strings

1027: string changes: Sent (all time) -> All Sessions