make side-panel sticky on configure screen

to by in sync with the configure screen of jobs

Author: mawinter69

src/main/resources/com/cloudbees/hudson/plugins/folder/AbstractFolder/configure.jelly

@@ -33,7 +33,7 @@ THE SOFTWARE.
       <script src="${resURL}/jsbundles/section-to-sidebar-items.js" type="text/javascript" defer="true" />
     </l:header>
 
-    <l:side-panel>
+    <l:side-panel sticky="true">
       <l:app-bar title="${%Configuration}"/>
       <div id="tasks" />
     </l:side-panel>