django: allow to crate new resource types

Signed-off-by: Jonas Remmert <jremmert@gmx.net>

Author: jonas-rem

server/django/sensordata/admin.py

@@ -42,11 +42,10 @@ def get_model_perms(self, request):
 class ResourceTypeAdmin(admin.ModelAdmin):
     list_display = ('object_id', 'resource_id', 'name', 'data_type')
     search_fields = ('object_id', 'resource_id', 'name')
-    readonly_fields = ('object_id', 'resource_id', 'name', 'data_type')
 
     def get_model_perms(self, request):
         return {
-            'add': False,
+            'add': True,
             'change': False,
             'delete': False,
             'view': True,