[ADF-2030] set the download name before to download it

fix theming documentation
remove old reference pack in the home

demo-shell/src/app/components/app-layout/app-layout.component.scss

@@ -10,6 +10,10 @@
        }
    }
 
+   .adf-app-layout-toolbar {
+     position: relative;
+   }
+
   .adf-app-layout {
     display: block;
     min-width: $minimumAppWidth;