add warning if on unexpected server

src/views/DiscoverView.vue

@@ -1,5 +1,6 @@
 <template>
   <QuickNav selected="Discover"></QuickNav>
+  <TopMessage />
 
   <!-- CONTENT -->
   <section id="Content" class="p-6 pb-24">
@@ -136,6 +137,7 @@ import { didInfo, ProjectData } from "@/libs/endorserServer";
 import QuickNav from "@/components/QuickNav.vue";
 import InfiniteScroll from "@/components/InfiniteScroll.vue";
 import EntityIcon from "@/components/EntityIcon.vue";
+import TopMessage from "@/components/TopMessage";
 
 interface Notification {
   group: string;
@@ -149,6 +151,7 @@ interface Notification {
     QuickNav,
     InfiniteScroll,
     EntityIcon,
+    TopMessage,
   },
 })
 export default class DiscoverView extends Vue {