Eliminate a lot of the if cases in create_user by separating them out. Add a limit to the number of users which can be created based on the license. Add support for creating and loading licenses.

data/users.py

@@ -92,14 +92,12 @@ class LDAPUsers(object):
         logger.error('Unable to pick a username for user: %s', username)
         return None
 
-      db_user = model.create_user(valid_username, None, email, add_change_pw_notification=False)
-      db_user.verified = True
-      model.attach_federated_login(db_user, 'ldap', username)
+      db_user = model.create_federated_user(valid_username, email, 'ldap', username,
+                                            set_password_notification=False)
     else:
       # Update the db attributes from ldap
       db_user.email = email
-
-    db_user.save()
+      db_user.save()
 
     return db_user