refs #560, allow to load / save from view/model

* added load/save functions
* changed menu from multiple bool members to flag
* shortcut for save
* cleaned up filter dialog handling

src/blackgui/shortcut.h

@@ -38,6 +38,12 @@ namespace BlackGui
 
         //! Display filter
         static const QKeySequence &keyDisplayFilter();
+
+        //! Save depending on context
+        static const QKeySequence &keySave();
+
+        //! Save in views
+        static const QKeySequence &keySaveViews();
     };
 } // ns
-#endif // CSHORTCUT_H
+#endif // guard