Small fixes for the GRB theme and value substitution

test.ts

@@ -0,0 +1,14 @@
+import {OsmConnection} from "./Logic/Osm/OsmConnection";
+import {UIEventSource} from "./Logic/UIEventSource";
+
+
+const conn = new OsmConnection(false, new UIEventSource<string>(""), false); 
+conn.AttemptLogin();
+
+
+const csHandler = conn.changesetHandler;
+
+conn.OnLoggedIn((ud) => {
+    
+    
+});