Fixed association links
    
    The create_association_facets() has been modified such that it
    does not generate duplicate links. This is done by assigning the
    proper labels and hiding non-assignable associations.
    
    Each association will get a label based on the attribute used:
     - memberof: Membership in <entity name>
     - member.*: <entity name> Members
     - managedby: Managed by <entity name>
    
    The following associations will be hidden:
     - memberindirect
     - enrolledby
    
    The internal.py was modified to return localized labels.
    
    The test data has been updated.