Fixes / improvements found during testing

* Redundant "simulatorStatusChanged" signal in proxy
* invokeMethod for timer
* removed redundant this->buildNavigator(1)
* Shortcut in GUI
* comment in variant

src/blackgui/components/mappingcomponent.h

@@ -41,7 +41,7 @@ namespace BlackGui
             explicit CMappingComponent(QWidget *parent = nullptr);
 
             //! Destructor
-            ~CMappingComponent();
+            virtual ~CMappingComponent();
 
             //! Number of current mappings
             int countCurrentMappings() const;

src/blackgui/components/navigatordockwidget.cpp

@@ -31,7 +31,6 @@ namespace BlackGui
             this->allowStatusBar(false);
             ui->setupUi(this);
             this->ps_onStyleSheetsChanged();
-            this->buildNavigator(1);
         }
 
         CNavigatorDockWidget::~CNavigatorDockWidget()
@@ -143,7 +142,7 @@ namespace BlackGui
 
         int CNavigatorDockWidget::columnsForRows(int rows)
         {
-            Q_ASSERT(rows >= 0);
+            Q_ASSERT_X(rows >= 0, Q_FUNC_INFO, "no rows");
             int items = this->m_widgets.size();
             int c = items / rows;
             return (c * rows) < items ? c + 1 : c;

src/blackgui/components/navigatordockwidget.h

@@ -34,7 +34,7 @@ namespace BlackGui
             explicit CNavigatorDockWidget(QWidget *parent = nullptr);
 
             //! Destructor
-            ~CNavigatorDockWidget();
+            virtual ~CNavigatorDockWidget();
 
             //! Add action as navigator item
             void addAction(QAction * action);

src/blackgui/components/navigatordockwidget.ui

@@ -2,6 +2,26 @@
 <ui version="4.0">
  <class>CNavigatorDockWidget</class>
  <widget class="QDockWidget" name="CNavigatorDockWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>60</width>
+    <height>38</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>30</width>
+    <height>38</height>
+   </size>
+  </property>
   <property name="floating">
    <bool>true</bool>
   </property>