These defaults affect manual setup only. There should be no changes
observed in automatic setup, and no changes observed in EAS setup.
* user $email instead of $user as default login
* guess "imap." or "pop3." for server name
* propagate the incoming server name to the outgoing server name, and
replace "imap.", "pop3." or "pop." with "smtp."
Also, fixed a couple of leftover places where we were trimming
passwords (and should not be, since some people insist on having
spaces in their passwords.)
Bug: 2978634
Change-Id: I9b0e345aa9550b5e1cc29aaa22109f03da61af20
ba4e72a947