PatternsService: add "source" arg to stopPattern() so ImapSearcher and others can stop patterns when condition no longer matches, reduced extra change notification, cleaned up changeListeners, removed lodash dependency
PatternsService: add "source" arg to stopPattern() so ImapSearcher and others can stop patterns when condition no longer matches, reduced extra change notification, cleaned up changeListeners, removed lodash dependency

todbot/Blink1Control2,todbot/Blink1Control2