Reach nodes by unique name instead of long paths

Nodes a script uses through a path of several nodes are marked unique in their
scene and found with %Name. The search list is renamed SearchResults, and the
player row's nodes get their real types.

MainWindow.tscn

@@ -74,6 +74,7 @@ text = "Statistics"
 horizontal_alignment = 1
 
 [node name="StatisticsLabel" type="Label" parent="StatisticsPopupPanel" unique_id=58226477]
+unique_name_in_owner = true
 offset_left = 4.0
 offset_top = 4.0
 offset_right = 446.0