Update modules by applying 2to3 converter.

modules/callbacks.py

@@ -2,7 +2,7 @@
 
 """
 from gluon import current
-from plugin_dbui import CALLBACK_ERRORS
+from .plugin_dbui import CALLBACK_ERRORS
 
 
 def country_delete(s):

modules/model_core.py

-# -*- coding: utf-8 -*-
 """Definitions of the core tables
 
 """
-from callbacks import (country_delete,
-                       country_insert,
-                       country_update)
+from .callbacks import (country_delete,
+                        country_insert,
+                        country_update)
 
 from gluon import current
 from gluon.validators import (IS_EMPTY_OR,
@@ -14,10 +13,10 @@ from gluon.validators import (IS_EMPTY_OR,
                               IS_IN_SET,
                               IS_URL)
 
-from plugin_dbui import (CLEAN_SPACES,
-                         INHIBIT_DELETE_UNDEF,
-                         INHIBIT_UPDATE_UNDEF,
-                         UNDEF_ID)
+from .plugin_dbui import (CLEAN_SPACES,
+                          INHIBIT_DELETE_UNDEF,
+                          INHIBIT_UPDATE_UNDEF,
+                          UNDEF_ID)
 
 from pydal import Field
 

modules/model_selector.py

-# -*- coding: utf-8 -*-
 """Definitions of the selector(s)
 
 """

modules/ui_core.py

-# -*- coding: utf-8 -*-
 """User Interface for the  core tables
 
 """
 from gluon import current
-from plugin_dbui import (FieldsModifier,
-                         FormModifier,
-                         GridModifier,
-                         StoreModifier,
-                         map_tabpanel)
+from .plugin_dbui import (FieldsModifier,
+                          FormModifier,
+                          GridModifier,
+                          StoreModifier,
+                          map_tabpanel)
 
 TPL = [
    '<b>{PublicationsTitle}</b><br>',

modules/ui_selector.py

-# -*- coding: utf-8 -*-
 """User Interface for the selector tables
 
 """
-from plugin_dbui import FieldsModifier, FormModifier
+from .plugin_dbui import FieldsModifier, FormModifier
 
 
 class SelectorUI(object):

modules/ui_viewport.py

-# -*- coding: utf-8 -*-
 """Main user interface the viewport
 
 """
@@ -6,13 +5,13 @@ from gluon import current
 from gluon.html import URL
 from gluon.tools import PluginManager
 
-from plugin_dbui import (Node,
-                         Panel,
-                         to_formPanel,
-                         to_gridPanel,
-                         to_panelWithUrlSelector,
-                         ViewportModifier,
-                         Window)
+from .plugin_dbui import (Node,
+                          Panel,
+                          to_formPanel,
+                          to_gridPanel,
+                          to_panelWithUrlSelector,
+                          ViewportModifier,
+                          Window)
 
 
 def to_grid(tablename):