Update controllers by applying 2to3 converter.

controllers/plugin_dbui.py

@@ -105,13 +105,13 @@ def dbui_conf():
 
     # build the dictionary required by Ext.direct
     # containing the definition of the remote procedure
-    for (k, f) in directSvc.procedures.iteritems():
+    for k, f in list(directSvc.procedures.items()):
         action, method = k.split(".")
 
         if action == DBUI:
-            nargs = f.func_code.co_argcount
+            nargs = f.__code__.co_argcount
         else:
-            nargs = f.__func__.func_code.co_argcount - 1
+            nargs = f.__func__.__code__.co_argcount - 1
 
         if action not in di:
             di[action] = []