Properly handle account deleted

Close #191

Also fix an issue with public events not being accessible when requested
as another logged-in user.

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/components/NavBar.vue

@@ -15,7 +15,7 @@
         <search-field />
       </b-navbar-item>
 
-      <b-navbar-dropdown v-if="currentUser.isLoggedIn" right>
+      <b-navbar-dropdown v-if="currentActor.id && currentUser.isLoggedIn" right>
         <template slot="label" v-if="currentActor" class="navbar-dropdown-profile">
           <figure class="image is-32x32" v-if="currentActor.avatar">
             <img class="is-rounded" alt="avatarUrl" :src="currentActor.avatar.url">
@@ -97,6 +97,7 @@ import { RouteName } from '@/router';
       skip() {
         return this.currentUser.isLoggedIn === false;
       },
+      error({ graphQLErrors }) { this.handleErrors(graphQLErrors); },
     },
     config: {
       query: CONFIG,
@@ -135,6 +136,12 @@ export default class NavBar extends Vue {
     }
   }
 
+  async handleErrors(errors: GraphQLError) {
+    if (errors[0].message === 'You need to be logged-in to view your list of identities') {
+      await this.logout();
+    }
+  }
+
   async logout() {
     await logout(this.$apollo.provider.defaultClient);
     this.$buefy.notification.open({