[web] Fix incorrect colour of loading progress bar

All informative UI elements have now the information colour defined in Bulma.

web-src/src/App.vue

@@ -1,7 +1,7 @@
 <template>
   <div id="app">
     <navbar-top />
-    <vue-progress-bar class="fd-progress-bar" />
+    <vue-progress-bar class="fd-progress-bar has-background-info" />
     <router-view v-slot="{ Component }">
       <component :is="Component" />
     </router-view>

web-src/src/main.js

@@ -16,11 +16,7 @@ import './mystyles.scss'
 const app = createApp(App)
   .use(store)
   .use(router)
-  .use(VueProgressBar, {
-    color: 'hsl(204, 86%, 53%)',
-    failedColor: 'red',
-    height: '1px'
-  })
+  .use(VueProgressBar)
   .use(VueClickAway)
   .use(VueLazyLoad, {
     // Do not log errors, if image does not exist