Return to running all tests and not pausing
Add tests to verify password successfully changed

We verify a successful change-password operation by logging out and
logging back in. Since this can have race conditions when run under two
different browsers at once (one has just changed the password to NewPass
while the other is still trying to log in with OldPass, or vice versa)
we also change protractorConf.js to only run under a single browser,
rather than under multiple browsers.