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.

SearchPopup.tscn

@@ -47,6 +47,7 @@ offset_right = 576.0
 offset_bottom = 384.0
 scale = Vector2(2, 2)
 
-[node name="VBoxContainer" type="VBoxContainer" parent="ScrollContainer" unique_id=1567403144]
+[node name="SearchResults" type="VBoxContainer" parent="ScrollContainer" unique_id=1567403144]
+unique_name_in_owner = true
 layout_mode = 2
 size_flags_horizontal = 3