Fix credential page in account tab after external password change

[GoogleCodeExporter]

What steps will reproduce the problem?
1. If you are using LDAP auth change ldap password outside of Yabi.
2. If you are using ModelBackend change password within admin interface of FE 
and Admin but not via the Yabife account page.
3. Now when you try to login Yabiadmin will not be able to decrypt your 
credentials because they are encrypted with your old password.

* We need a page on the account or credential page to "fix" credentials, 
allowing user to type in their old password and their new password and then 
fixing the backend credentials for that user. 
* Changes will need to be made to allow the user to log in at all, currently if 
one cred decrypt fails they can not log in to get to the account page.

Original issue reported on code.google.com by amacgregor on 29 Feb 2012 at 4:20

[GoogleCodeExporter]

Original comment by aahun...@gmail.com on 7 Jul 2012 at 3:55

• Changed title: Fix credential page in account tab after external password change
• Changed state: New