Flesh out EasService some, and start using it.

- Fix some of the TODOs.
- Add it to the manifest.
- Route some operations from EmailSyncAdapterService to it
  during testing/development.

Note that this last bit is a bit Frankenstein right now, so
it's guarded by a constant (which should stay false when checked
in) and in no way will an account function "normally" during the

Change-Id: I52e5500c7eac1999963712f3bd96d114f9afc3ed

4 files changed