Bug 936908: Do not batch work from monitor onscreen/offscreen.
Merge pull request #13602 from wanderview/contacts-monitor-no-timer-1

Bug 936908: Do not batch work from monitor onscreen/offscreen.  r=arcturus
Bug 934402 - Write an atom to send SMS using 'MozSMS' API. r=zcampbell, r=fstrugariu, r=dhunt