Massive rewrite to AnimationTree. Many APIs changed in order to:

-Reuse resources
-Expose properties in AnimationTree

editor/inspector_dock.h

@@ -51,13 +51,12 @@ class InspectorDock : public VBoxContainer {
 	GDCLASS(InspectorDock, VBoxContainer);
 
 	enum MenuOptions {
-		RESOURCE_NEW,
 		RESOURCE_LOAD,
 		RESOURCE_SAVE,
 		RESOURCE_SAVE_AS,
-		RESOURCE_UNREF,
+		RESOURCE_MAKE_BUILT_IN,
 		RESOURCE_COPY,
-		RESOURCE_PASTE,
+		RESOURCE_EDIT_CLIPBOARD,
 		OBJECT_COPY_PARAMS,
 		OBJECT_PASTE_PARAMS,
 		OBJECT_UNIQUE_RESOURCES,