Added a label to the Dock Positioner.

editor/editor_node.cpp

@@ -4793,7 +4793,12 @@ EditorNode::EditorNode() {
 	dock_tab_move_left->set_focus_mode(Control::FOCUS_NONE);
 	dock_tab_move_left->connect("pressed", this, "_dock_move_left");
 	dock_hb->add_child(dock_tab_move_left);
-	dock_hb->add_spacer();
+
+	Label *dock_label = memnew(Label);
+	dock_label->set_text(TTR("Dock Position"));
+	dock_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
+	dock_hb->add_child(dock_label);
+
 	dock_tab_move_right = memnew(ToolButton);
 	dock_tab_move_right->set_icon(theme->get_icon("Forward", "EditorIcons"));
 	dock_tab_move_right->set_focus_mode(Control::FOCUS_NONE);