Update models/main to initialize plugin_dbui.

models/main.py

@@ -20,6 +20,7 @@ from _mydb import DBURIS
 
 from auth import configure_auth, USER
 from gluon import current
+from gluon.tools import PluginManager
 from model_app import App
 from model_core import Core
 from model_harvester import Harvester
@@ -79,6 +80,8 @@ T.lazy = True                                    # immediate translation
 #
 # Configure plugin_dbui
 #
+plugins = PluginManager()
+plugins.dbui.pname = "plugin_dbui"
 
 ctrl = request.controller
 fnct = request.function