Wrong error message when resetting password

[mebster]

When the user fails to login (with local authentication method) and clicks on the 'reset password' link, the error message is still shown, but with a different title. The error message should be cleared when switching to the reset password dialog.

[mebster]

Further, when the user clicks on the 'reset password' button, previous errors should be cleared, such that only the success or error of the reset action is shown.

[mebster]

Furthermore, on the page acknowledging the reset password (from the email link), the user cannot login, as the Login button has no effect.