QmlDesigner: Add new icons for content updates

Change-Id: Id5f1694eb301157cad3e67bd576df184527dd6a1
Reviewed-by: Henning Gründl <henning.gruendl@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/StudioTheme/InternalConstants.qml

@@ -318,24 +318,26 @@ QtObject {
     readonly property string unpin: "\u0151"
     readonly property string upDownIcon: "\u0152"
     readonly property string upDownSquare2: "\u0153"
-    readonly property string visibilityOff: "\u0154"
-    readonly property string visibilityOn: "\u0155"
-    readonly property string visible_medium: "\u0156"
-    readonly property string visible_small: "\u0157"
-    readonly property string wildcard: "\u0158"
-    readonly property string wizardsAutomotive: "\u0159"
-    readonly property string wizardsDesktop: "\u015A"
-    readonly property string wizardsGeneric: "\u015B"
-    readonly property string wizardsMcuEmpty: "\u015C"
-    readonly property string wizardsMcuGraph: "\u015D"
-    readonly property string wizardsMobile: "\u015E"
-    readonly property string wizardsUnknown: "\u015F"
-    readonly property string zoomAll: "\u0160"
-    readonly property string zoomIn: "\u0161"
-    readonly property string zoomIn_medium: "\u0162"
-    readonly property string zoomOut: "\u0163"
-    readonly property string zoomOut_medium: "\u0164"
-    readonly property string zoomSelection: "\u0165"
+    readonly property string updateAvailable_medium: "\u0154"
+    readonly property string updateContent_medium: "\u0155"
+    readonly property string visibilityOff: "\u0156"
+    readonly property string visibilityOn: "\u0157"
+    readonly property string visible_medium: "\u0158"
+    readonly property string visible_small: "\u0159"
+    readonly property string wildcard: "\u015A"
+    readonly property string wizardsAutomotive: "\u015B"
+    readonly property string wizardsDesktop: "\u015C"
+    readonly property string wizardsGeneric: "\u015D"
+    readonly property string wizardsMcuEmpty: "\u015E"
+    readonly property string wizardsMcuGraph: "\u015F"
+    readonly property string wizardsMobile: "\u0160"
+    readonly property string wizardsUnknown: "\u0161"
+    readonly property string zoomAll: "\u0162"
+    readonly property string zoomIn: "\u0163"
+    readonly property string zoomIn_medium: "\u0164"
+    readonly property string zoomOut: "\u0165"
+    readonly property string zoomOut_medium: "\u0166"
+    readonly property string zoomSelection: "\u0167"
 
     readonly property font iconFont: Qt.font({
                                                  "family": controlIcons.name,

src/plugins/qmldesigner/components/componentcore/theme.h

@@ -326,6 +326,8 @@ public:
         unpin,
         upDownIcon,
         upDownSquare2,
+        updateAvailable_medium,
+        updateContent_medium,
         visibilityOff,
         visibilityOn,
         visible_medium,