new: app icon

lib/view/page/server/detail.dart

@@ -114,6 +114,7 @@ class _ServerDetailPageState extends State<ServerDetailPage>
       child: Image.asset(
         iconPath,
         fit: BoxFit.contain,
+        semanticLabel: _s.showDistLogo,
       ),
     );
   }

lib/view/page/snippet/list.dart

@@ -26,9 +26,6 @@ class _SnippetListPageState extends State<SnippetListPage> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(
-        title: Text(_s.snippet),
-      ),
       body: _buildBody(),
       floatingActionButton: FloatingActionButton(
         heroTag: 'snippet',