Merge branch 'sdk' of github.com:c9/newclient into sdk

node_modules/ace_tree/lib/ace_tree/data_provider.js

@@ -269,7 +269,7 @@ var DataProvider = function(root) {
         return node.isSelected = !!val;
     };
     this.isSelectable = function(node) {
-        return !node || !node.noSelect;
+        return !node || !(node.noSelect || node.$depth < 0);
     };
     
     this.isAncestor = function(node, child) {