Issue #803294 by wojtha, mfb, c960657, Heine, oriol_e9g: Fixed OpenID discovery and login tests fail on HTTPS site.

Rollback of #1076366. This is not quite ready to go yet, because it depends on another issue (#1120290).

- Patch #1076366 by wojtha: OpenID discovery spec violation - fragments are removed from claimed id .

#925778 by mradcliffe, chx, sun, manarth: Fixed user edit title incorrectly shows currently logged in user.

#500866 by boombatower, solotandem: Remove t() from assertion messages in SimpleTest, so translators do not get 1000s of bogus strings.

#363580 by rfay, chx, Berdir, Rob Loach, Gábor Hojtsy, Shawn DeArmond: Fixed OpenID login fails when in maintenance mode, and 403 errors on certain user paths for logged-in users.

- Patch #740036 by c960657, Damien Tournoud: Fixed OpenID AX: Request nickname + support alternative namespaces.

- Patch #174972 by rfay, stBorchert, gaele: user creation setting should be 'Visitors, with admin approval'.

- Patch #727650 by Damien Tournoud, c960657: rolled back support for Google-specific OpenID discovery protocol.

- Patch #740036 by c960657, Damien Tournoud: OpenID AX: Request nickname + support alternative namespaces.

- Patch #395340 by c960657: critical bug: enforce e-mail verification with OpenID auto-registration.

- Patch #728278 by c960657: openid_complete() should normalize ['openid.claimed_id()'] before discovery. With better tests.

- Patch #727650 by Damien Tournoud: made OpenID more pluggable so we can extend it in contrib, and added support for Google's OpenID discovery protocol.

- Patch #634562 by vgarvardt, Damien Tournoud: added OpenID AX support (in addition to SREF) so that we can extend our OpenID implementation in contrib.

- Patch #579448 by c960657: fixed OpenID specification violation. Search for OP Identifier element to authenticate.

- Patch #686800 by c960657: refined the OpenID tests to verify that the user actually logged in to avoid false positives with blocked users.

#679890 follow-up by Bojhan, aspilicious, and agentrickard: Remove more extraneous 'Please' in the interface.

#216101 by c960657, Arancaytar, aufumy, et al: Fix registration workflow for OpenID providers that do not supply usernames/e-mail addresses.