OO-1256 replace CSS reset code in wiki CP export with code from light theme, open menu by default

src/main/webapp/static/cp_offline_menu_mat/mktree.js

@@ -37,7 +37,13 @@ This code is inspired by and extended from Stuart Langridge's aqlist code:
 */
 
 // Automatically attach a listener to the window onload, to convert the trees
-addEvent(window,"load",convertTrees);
+addEvent(window,"load",function() {
+	// first create js tree
+	convertTrees();
+	// now expand all 
+	expandTree('tree1');
+});
+
 
 // Utility function to add an event listener
 function addEvent(o,e,f){