refactor: use geo for sort after backend change

Closes #210

src/app/modules/map/map.provider.ts

@@ -134,7 +134,6 @@ export class MapProvider {
 
   /**
    * Provide places (buildings and canteens)    const result = await this.dataProvider.search(query);
-   
    *
    * @param contextFilter Additional contextual filter (e.g. from the context menu)
    * @param queryText Query (text) of the search query
@@ -223,7 +222,7 @@ export class MapProvider {
           type: 'distance',
           order: 'asc',
           arguments: {
-            field: 'geo.point.coordinates',
+            field: 'geo',
             position: [
               this.positionService.position.longitude,
               this.positionService.position.latitude,