Add axios auth interceptor

frontend/src/main.js

@@ -2,6 +2,16 @@ import Vue from "vue";
 import App from "./App.vue";
 import router from "./router";
 import vuetify from './plugins/vuetify';
+import axios from "axios"
+
+// JWT will be injected automatically when available
+axios.interceptors.request.use(config => {
+  let token = sessionStorage.getItem("jwt")
+  if (token) {
+    config.headers.Authorization = token
+  }
+  return config
+})
 
 Vue.config.productionTip = false;