Add MetaGroup system

core/admin.py

@@ -1,10 +1,10 @@
 from django.contrib import admin
-from core.models import User, Page, Group
+from core.models import User, Page, RealGroup
 from django.contrib.auth.models import Group as AuthGroup
 
 
 admin.site.register(User)
 admin.site.unregister(AuthGroup)
-admin.site.register(Group)
+admin.site.register(RealGroup)
 admin.site.register(Page)