#11 Clean up/ enhance the group sync

[Adam]

We need a way to allow group sync to work in may
different ways.

opt 1) specify different config types
- Current System; groups listed in group member
are already the display name
- Groups in the group member field are DN's and we
need to find there display names for link to phpBB
- Groups in the group member field are DN's and we
need a field in group management to specify a DN for
that group
- Groups are not listed in a Group member field
and we have to search the groups to fine if this user
is apart of them (this can take CPU time and we will
need to think about this)
- Enable/Disable sup group searching

opt 2) overhaul the group sync system completely to go
to a model similar to LDAP client configs found with
Unix type systems.