hide menu button on about page

src/components/TopBar.vue

@@ -37,7 +37,7 @@
       </v-toolbar-items>
       <v-divider vertical/>
 
-            <v-btn width="96px" aria-labelledby="menu_label" text @click.native="menuOpen = !menuOpen">
+            <v-btn width="96px" v-if="$route.name != 'about'" aria-labelledby="menu_label" text @click.native="menuOpen = !menuOpen">
               <span id="menu_label">{{$t('menu.title')}}</span><v-icon right>{{menuOpen? 'close' : 'menu'}}</v-icon></v-btn>
         <v-divider vertical/>