Signals became a tab

added icons to contextual scene tree menu

tools/editor/editor_node.h

@@ -272,6 +272,7 @@ private:
 	SceneTreeDock *scene_tree_dock;
 	//ResourcesDock *resources_dock;
 	PropertyEditor *property_editor;
+	ConnectionsDock *connections_dock;
 	VBoxContainer *prop_editor_vb;
 	ScenesDock *scenes_dock;
 	EditorRunNative *run_native;