#169 Admin on teams

* adds admin column on team index view
* refactors Team model, so multiple members can become admins
* adds team migration for switch from fkey->m2m structure
* renames 'Group' to 'Permission' on user index view to avoid confusion between 'Groups' and Teams
* adds new autocomplete route for team-admin selection based on already selected members of the TeamForm

user/admin.py

@@ -68,22 +68,16 @@ class TeamAdmin(admin.ModelAdmin):
     list_display = [
         "name",
         "description",
-        "admin",
     ]
     search_fields = [
         "name",
         "description",
     ]
     filter_horizontal = [
-        "users"
+        "users",
+        "admins",
     ]
 
-    def formfield_for_foreignkey(self, db_field, request, **kwargs):
-        if db_field.name == "admin":
-            team_id = request.resolver_match.kwargs.get("object_id", None)
-            kwargs["queryset"] = User.objects.filter(teams__id__in=[team_id])
-        return super().formfield_for_foreignkey(db_field, request, **kwargs)
-
 
 admin.site.register(User, UserAdmin)
 admin.site.register(Team, TeamAdmin)