Wizard fixes as discussed here: https://swift-project.slack.com/archives/G7GD2UP9C/p1534597257000200

- improved message for initial data loading
- Simulator wizard page before 1st model set page
- 1st model set component, forced directory loading (and not just displaying model cache)

src/blackgui/components/dbownmodelsdialog.h

@@ -42,6 +42,9 @@ namespace BlackGui
             //! \copydoc CDbOwnModelsComponent::requestModelsInBackground
             bool requestModelsInBackground(const BlackMisc::Simulation::CSimulatorInfo &simulator, bool onlyIfNotEmpty);
 
+            //! \copydoc CDbOwnModelsComponent::getOwnModelsCount
+            int getOwnModelsCount() const;
+
             //! Direct access to component
             //! \remark allows to use the powerful component class
             const CDbOwnModelsComponent *modelsComponent() const;