update UI when hash changes

src/preview/PreviewView.js

@@ -21,6 +21,8 @@ export class PreviewView extends TemplateView {
 		return t.div({className: "PreviewView"}, [
 			t.p(t.img({src: vm => vm.avatarUrl})),
 			t.p(vm => vm.name),
+			t.p(vm => vm.identifier),
+			t.p(["Can preview from ", vm => vm._consentedServers.join(", ")]),
 			t.p(["loading: ", vm => vm.loading])
 		]);
 	}

src/preview/PreviewViewModel.js

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import {LinkKind} from "../Link.js";
-import {ViewModel} from "../ViewModel.js";
+import {ViewModel} from "../utils/ViewModel.js";
 import {resolveServer} from "./HomeServer.js";
 
 export class PreviewViewModel extends ViewModel {
@@ -56,4 +56,8 @@ export class PreviewViewModel extends ViewModel {
 			homeserver.mxcUrlThumbnail(profile.avatar_url, 64, 64, "crop") :
 			null;
 	}
+
+	get identifier() {
+		return this._link.identifier;
+	}
 }