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.

PlayerRow.tscn

@@ -42,6 +42,7 @@ layout_mode = 2
 theme_override_styles/panel = SubResource("StyleBoxFlat_821k2")
 
 [node name="Name" type="Label" parent="HBoxContainer"]
+unique_name_in_owner = true
 custom_minimum_size = Vector2(130, 40)
 layout_mode = 2
 size_flags_horizontal = 3
@@ -57,6 +58,7 @@ layout_mode = 2
 theme_override_styles/panel = SubResource("StyleBoxFlat_w10e8")
 
 [node name="Character" type="TextureButton" parent="HBoxContainer"]
+unique_name_in_owner = true
 custom_minimum_size = Vector2(80, 40)
 layout_mode = 2
 focus_mode = 0
@@ -71,6 +73,7 @@ layout_mode = 2
 theme_override_styles/panel = SubResource("StyleBoxFlat_78a8g")
 
 [node name="AddPoint" type="Button" parent="HBoxContainer"]
+unique_name_in_owner = true
 custom_minimum_size = Vector2(40, 40)
 layout_mode = 2
 focus_mode = 0
@@ -83,6 +86,7 @@ layout_mode = 2
 theme_override_styles/panel = SubResource("StyleBoxFlat_i56hb")
 
 [node name="RemovePoint" type="Button" parent="HBoxContainer"]
+unique_name_in_owner = true
 custom_minimum_size = Vector2(40, 40)
 layout_mode = 2
 focus_mode = 0
@@ -95,6 +99,7 @@ layout_mode = 2
 theme_override_styles/panel = SubResource("StyleBoxFlat_b2crt")
 
 [node name="RemovePlayer" type="TextureButton" parent="HBoxContainer"]
+unique_name_in_owner = true
 custom_minimum_size = Vector2(40, 40)
 layout_mode = 2
 focus_mode = 0