Wait for trips to finish fetching before updating drafing board

web/drafting-board.js

@@ -5,14 +5,18 @@ import { fetchTrip } from './api.js';
 let element_board = document.querySelector("#drafting-board-content");
 
 export function addJourneyToDraftingBoard(journey) {
+	let awaiting_promises = [];
 	for (let leg of journey.legs.filter(item => !("walking" in item))) {
 		window.dataStore.legs.remember(leg.tripId, leg.origin.id, leg.destination.id);
-		fetchTrip(leg.tripId).then(result => {
+		awaiting_promises.push(fetchTrip(leg.tripId).then(result => {
 			window.dataStore.trips.remember(result.trip);
-		});
+		}));
 	}
 
-	drawDraftingBoard();
+	Promise.all(awaiting_promises)
+		.then(results => {
+			drawDraftingBoard();
+		});
 }
 
 export function drawDraftingBoard() {