Set the baseURL for ajax requests (#373)

* Set the baseURL for ajax requests

* Use async/await on AJAX calls

* Add mix_public() cache generated asset cache busting

* Move storage container into separate class

* Fix some styling

resources/js/frontend/bids.js

@@ -0,0 +1,41 @@
+'use strict';
+
+/**
+ * Add a bid to a flight
+ *
+ * @param {String} flight_id
+ *
+ * @returns {Promise<*>}
+ */
+export async function addBid(flight_id) {
+    const params = {
+        method: 'POST',
+        url: '/api/user/bids',
+        data: {
+            '_method': 'POST',
+            'flight_id': flight_id
+        }
+    };
+
+    return axios(params);
+}
+
+/**
+ * Remove a bid from a given flight
+ *
+ * @param {String} flight_id
+ *
+ * @returns {Promise<*>}
+ */
+export async function removeBid(flight_id) {
+    const params = {
+        method: 'POST',
+        url: '/api/user/bids',
+        data: {
+            '_method': 'DELETE',
+            'flight_id': flight_id
+        }
+    };
+
+    return axios(params);
+}