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.

search_popup.gd

@@ -2,7 +2,7 @@ class_name SearchPopup
 extends BasePopup
 
 @onready
-var search_list: VBoxContainer = $ScrollContainer/VBoxContainer
+var search_list: VBoxContainer = %SearchResults
 
 @onready
 var search_panel: Panel = %SearchPanel