Messages, Standard - Meaning of user_mismatched unclear

[Michael Jones]

This smells like another prompt:none error. These should be packaged together in some way that will make more sense to the reader (unless we replace it with a separate call explicitly asking whether the user is presently logged in).

[Nat Sakimura]

Messages 2.1.4.1 states it clearly enough.

[Nat Sakimura]

Fixed by another ticket.