Merge branch 'pentool' into brushtool

Conflicts:
	imports/codemirror/mode/scheme/scheme.js
	js/tools/BrushTool.js

1 files changed, 3 insertions, 2 deletions

diff --git a/js/components/controllers/tree-controller.js b/js/components/controllers/tree-controller.js
index 03ef7b9e..1e9222fd 100644
--- a/js/components/controllers/tree-controller.js
+++ b/js/components/controllers/tree-controller.js
@@ -28,7 +28,7 @@ var TreeController = exports.TreeController = Montage.create(ObjectController, /
     },
 
     branchKey : {
-        value: 'children'
+        value: null
     },
 
     _root : {
@@ -98,7 +98,8 @@ var TreeController = exports.TreeController = Montage.create(ObjectController, /
    },
 
     branchControllers: {
-        value: []
+        value: [],
+        distinct: true
     },
 
     addBranchController : {