Fix #2451630 (No calendar after upgrading Eclair->Froyo)

* Initialization of CalendarProvider Calendar was being done at
  account creation time, but Eclair accounts won't have had this
  done.
* Move Calendar creation code into CalendarSyncAdapter where it
  will be created before the first sync.

Bug: 2451630
Change-Id: I74c669d99f4c8aae4c5847f5cb9b0ca7f44929e2
3 files changed