GTK UI menubar accounts retrieval.

Only ask for known accounts if we have the required level for it.

deluge/ui/gtkui/menubar.py

@@ -213,6 +213,7 @@ class MenuBar(component.Component):
         # demon.
         self.menuitem_change_owner.set_visible(False)
 
+        if client.get_auth_level() == deluge.common.AUTH_LEVEL_ADMIN:
             # Get Known accounts to allow chaning ownership
             client.core.get_known_accounts().addCallback(
                 self._on_known_accounts).addErrback(self._on_known_accounts_fail