Core: WorkbenchComboBox and WorkbenchGroup simplification.

src/Gui/ApplicationPy.cpp

@@ -976,7 +976,7 @@ PyObject* Application::sAddWorkbenchHandler(PyObject * /*self*/, PyObject *args)
         }
 
         PyDict_SetItemString(Instance->_pcWorkbenchDictionary,item.c_str(),object.ptr());
-        Instance->signalAddWorkbench(item.c_str());
+        Instance->signalRefreshWorkbenches();
     }
     catch (const Py::Exception&) {
         return nullptr;
@@ -997,9 +997,9 @@ PyObject* Application::sRemoveWorkbenchHandler(PyObject * /*self*/, PyObject *ar
         return nullptr;
     }
 
-    Instance->signalRemoveWorkbench(psKey);
     WorkbenchManager::instance()->removeWorkbench(psKey);
     PyDict_DelItemString(Instance->_pcWorkbenchDictionary,psKey);
+    Instance->signalRefreshWorkbenches();
 
     Py_Return;
 }