Squashed commit of Preparing for the montage undo-manager: Architecture changes

Reworked the add and remove elements into 1 function which can take 1 or more elements.
Removed the _element from the selection array
Many other changes related to those 2 changes
Undo/Redo shortcuts are now using montage undo/redo manager.

Signed-off-by: Valerio Virgillito <valerio@motorola.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/js/panels/Timeline/Tween.reel/Tween.js b/js/panels/Timeline/Tween.reel/Tween.js
index 2b308d9a..7339139f 100644
--- a/js/panels/Timeline/Tween.reel/Tween.js
+++ b/js/panels/Timeline/Tween.reel/Tween.js
@@ -162,7 +162,7 @@ var Tween = exports.Tween = Montage.create(Component, {
                 
             if (event.detail.source && event.detail.source !== "tween") {
                 // check for correct element selection
-                if (this.application.ninja.selectedElements[0]._element != this.parentComponent.parentComponent.animatedElement) {
+                if (this.application.ninja.selectedElements[0]!= this.parentComponent.parentComponent.animatedElement) {
                     console.log("Wrong element selected for this keyframe track");
                 } else {
                     // update tweenedProperties and tell containing track to update CSS rule