Add search, a few flow updates

Logic/Geocoding.ts

@@ -0,0 +1,18 @@
+import * as $ from "jquery"
+import {UIEventSource} from "../UI/UIEventSource";
+
+export class Geocoding {
+
+    private static readonly host = "https://nominatim.openstreetmap.org/search?";
+
+    static Search(query: string, currentLocation: UIEventSource<{ lat: number, lon: number }>,
+                  handleResult: ((places: { display_name: string, lat: number, lon: number, boundingbox : number[] }[]) => void)) {
+        $.getJSON(
+            Geocoding.host + "format=json&accept-language=nl&q=" + query,
+            function (data) {
+               handleResult(data);
+            });
+    }
+
+
+}