allow add and edit services types

services/admin.py

@@ -363,7 +363,6 @@ class TunnelAdmin(admin.ModelAdmin):
 
 class ServiceTypeAdmin(admin.ModelAdmin):
     fields = ('name',)
-    readonly_fields = ('name',)
 
     def get_actions(self, request):
         actions = super().get_actions(request)
@@ -371,9 +370,6 @@ class ServiceTypeAdmin(admin.ModelAdmin):
             del actions['delete_selected']
         return actions
 
-    def has_add_permission(self, request, obj=None):
-        return False
-
     def has_delete_permission(self, request, obj=None):
         return False