Password change makes account inaccessible

[stonie08]

When changing the password through the Firefox browser, the account gets inaccessible.
This is most likely due to the fact, that the changed password is saved unhashed in the database.

[Daniel Triendl]

Sorry, this was my fault. I fixed it in b22f18d and @balu- just has to merge the fix.

[balu]

thanks a lot =)