add outline for historic map on top of it

app/map_styles/polygon.xml

@@ -19,6 +19,13 @@
             <MinScaleDenominator>0</MinScaleDenominator>
         </Rule>
     </Style>
+    <Style name="base_night_outlines">
+        <Rule>
+            <LineSymbolizer stroke="#ffccccaa" stroke-width="0.5" />
+            <MaxScaleDenominator>17000</MaxScaleDenominator>
+            <MinScaleDenominator>0</MinScaleDenominator>
+        </Rule>
+    </Style>
     <Style name="number_labels">
         <Rule>
             <TextSymbolizer

app/src/frontend/config/map-config.ts

@@ -8,7 +8,7 @@ export const initialMapViewport: MapViewport = {
   zoom: 16,
 };
 
-export type MapTheme = 'light' | 'night';
+export type MapTheme = 'light' | 'night' | 'night_outlines';
 
 export type BoroughEnablementState = 'enabled' | 'disabled';
 
@@ -22,5 +22,6 @@ export type HistoricDataEnablementState = 'enabled' | 'disabled';
 
 export const mapBackgroundColor: Record<MapTheme, string> = {
     light: '#F0EEEB',
-    night: '#162639'
+    night: '#162639',
+    night_outlines: '#162639'
 };

app/src/frontend/config/tileserver-config.ts

@@ -21,6 +21,6 @@ export type BuildingMapTileset = 'date_year' |
     'dynamics_demolished_count' |
     'team';
 
-export type SpecialMapTileset = 'base_light' | 'base_night' | 'highlight' | 'number_labels';
+export type SpecialMapTileset = 'base_light' | 'base_night' | 'base_night_outlines' | 'highlight' | 'number_labels';
 
 export type MapTileset = BuildingMapTileset | SpecialMapTileset;

app/src/frontend/map/layers/historic-data-layer.tsx

@@ -1,13 +1,14 @@
 import * as React from 'react';
 import { TileLayer } from 'react-leaflet';
 import { HistoricDataEnablementState } from '../../config/map-config';
+import { BuildingBaseLayer } from './building-base-layer';
 
 export function HistoricDataLayer({enablement}: {enablement: HistoricDataEnablementState}) {
     if(enablement == "enabled") {
-        return <TileLayer
+        return <><TileLayer
             url="https://mapseries-tilesets.s3.amazonaws.com/london_1890s/{z}/{x}/{y}.png"
             attribution='&copy; CC BY 4.0 - Reproduced with the permission of the <a href="https://maps.nls.uk/">National Library of Scotland</a>'
-        />
+        /><BuildingBaseLayer theme="night_outlines" /></>
 	} else {
         return null;
     }

app/src/tiles/dataDefinition.ts

@@ -13,6 +13,11 @@ const LAYER_QUERIES = {
             geometry_id
         FROM
             buildings`,
+    base_night_outlines: `
+        SELECT
+            geometry_id
+        FROM
+            buildings`,
     number_labels:`
         SELECT
             geometry_id,