Review Feedack

* Fixed nits, switch to ignoreTimezone
* start a new ticket around how best to do wifi wake lock.
* Simplified alarm checking by doing it for all accounts,
  with cronsync calling itself when appropriate. No more
  setNextSync on the cronsync side, and no addAlarm on the
  cronsync-main side, just an ensureSync that does it for all
  accounts. There is still a call in mailuniverse for
  ensureSynce for the saveAccountDef case.
* The alarm checking in ensureSync also checks the interval
  spacing for each alarm to make sure it is correct and not
  invalidated by a funky past/future time change.