add error control for openid on registration. fix #729
update error message to login one
Merge pull request #767 from tomtom84/master

update diabook-theme
Check for user name in deleted user list and unset account expiration before importing the account (Bug #760)
Merge pull request #764 from fabrixxm/bug729

Fix bug #729
- diabook update
-- adjust nav-bar, depending to userstatus