Conflicting e-mail addresses for LDAP and RhodeCode users.
1) Create a user with an e-mail address email@example.com from the interface.
2) Login a user with the very same e-mail address firstname.lastname@example.org using LDAP.
3) Try to change settings for the LDAP user in RhodeCode, e.g. assign admin rights.
==> Problem: Notification in UI : "This e-mail address is already taken" Settings cannot be stored.