Ldap

Displays real names in the web application. It does so by asking LDAP for a common name every time an user logs in. Maybe we should improve this functionality so that it does something smarter, idk.

The name of the current user is available as `${#authentication.userDetails.name}` and of course an `Account` object has the `getName()` method.

I will have to merge this myself because I need to verify that this actually works on the real server ;)