Merge branch 'master' of github.com:k9mail/k-9

* 'master' of github.com:k9mail/k-9:
  Work around cases where mail was last checked in the future.
  Add progress indicator during account move.
  Disable account move menu items when account is at an end of the list.
  Working version of moving accounts within the Accounts view.
  Fixes Issue 3177
  Removed some doc annotations from chrisk's fix for the service stopping issue (2777)
  Stop service(s) if not in use - Fixes Issue 2777
  optimize cketti's pop3 space-splitting code to not make lots of extra copies of responses.
  Updated Japanese translation. catch up with 20d2942a.
  Move Sender Address to end of Default Projection
  Expose SenderAddress through ContentProvider. Issue: 3665