Merge remote-tracking branch 'origin/5.11' into 5.12

Change-Id: Ia638a7a49962c3f191d5ba41a0b5c9dc1d7f500b

doc/config/style/qt5-sidebar.html

 <div class="sectionlist normallist">
     <div class="heading">
-        <a name="reference"></a>
-        <h2 id="reference">Reference</h2>
+        <h2>Reference</h2>
     </div>
     <div class="indexboxcont indexboxbar">
         <ul>
@@ -17,8 +16,7 @@
 </div>
 <div class="sectionlist normallist">
     <div class="heading">
-        <a name="getting-started"></a>
-        <h2 id="getting-started">Getting Started</h2>
+        <h2>Getting Started</h2>
     </div>
     <ul>
         <li><a href="gettingstarted.html">Getting Started with Qt</a></li>
@@ -30,8 +28,7 @@
 </div>
 <div class="sectionlist normallist">
     <div class="heading">
-        <a name="overviews"></a>
-        <h2 id="overviews">Overviews</h2>
+        <h2>Overviews</h2>
     </div>
     <ul>
         <li><a href="topics-app-development.html">Development Tools</a></li>