ProjectExplorer: Show kit icons in kitmanagerconfigwidget

Our kits have nice icons. Why not show them?

Change-Id: I053861225151a34690bf5247be04cc6165b2ac3a
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/projectexplorer/kitmanagerconfigwidget.cpp

@@ -142,6 +142,11 @@ QString KitManagerConfigWidget::displayName() const
     return m_cachedDisplayName;
 }
 
+QIcon KitManagerConfigWidget::icon() const
+{
+    return m_modifiedKit->icon();
+}
+
 void KitManagerConfigWidget::apply()
 {
     bool mustSetDefault = m_isDefaultKit;

src/plugins/projectexplorer/kitmanagerconfigwidget.h

@@ -50,6 +50,7 @@ public:
     ~KitManagerConfigWidget() override;
 
     QString displayName() const;
+    QIcon icon() const;
 
     void apply();
     void discard();

src/plugins/projectexplorer/kitmodel.cpp

@@ -86,7 +86,7 @@ public:
                     static const QIcon warningIcon(Utils::Icons::WARNING.icon());
                     return warningIcon;
                 }
-                return QIcon();
+                return widget->icon();
             }
             if (role == Qt::ToolTipRole) {
                 return widget->validityMessage();