BUGFIX Don't reload the tree node if it is currently in selection-mod…

…e (in LeftAndMain_left.js)

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/cms/trunk@92721 467b73ca-7a2a-4603-9d3b-597d59a354a9

javascript/LeftAndMain_left.js

@@ -202,7 +202,9 @@ TreeNodeAPI.prototype = {
 		var url = jQuery(this).find('a').attr('href');
 		if(url && url != '#') {
 		  jQuery('#sitetree').trigger('selectionchanged', {node: this});
-			if($('sitetree').notify('SelectionChanged', this)) {
+			// don't get page if either event was cancelled,
+			// or the tree is currently in a selectable state.
+			if($('sitetree').notify('SelectionChanged', this) && !jQuery(this.tree).hasClass('multiselect')) {
 		    this.getPageFromServer();
 			}
 		} else {