*Revert r25375, breaks other messages. I didn't realize how messed up this scheme...

*Revert r25375, breaks other messages. I didn't realize how messed up this scheme is. Some messages need to be parsed others need not too. All should be parsed. Any that don't must be changed.
*Make getUserPermissionsErrorsInternal() insert wikitext link arguments (e.g. '[[x|y]]', rather than raw links), that way we won't have escaped HTML.