Improve messages appearance

lib/ui/tiles/conversation_message_tile.dart

@@ -62,7 +62,7 @@ class ConversationMessageTile extends StatelessWidget {
                         color: Colors.white,
                         size: 14,
                       ),
-                      onSelected: _menuOptionSelected,
+                      onSelected: (v) => _menuOptionSelected(context, v),
                       itemBuilder: (c) => <PopupMenuItem<_MenuChoices>>[
                         PopupMenuItem(
                           enabled: (message.message?.content ?? "") != "",
@@ -117,14 +117,16 @@ class ConversationMessageTile extends StatelessWidget {
   }
 
   /// Process menu choice
-  void _menuOptionSelected(_MenuChoices value) {
+  void _menuOptionSelected(BuildContext context, _MenuChoices value) {
     switch (value) {
       case _MenuChoices.COPY_MESSAGE:
         FlutterClipboard.copy(message.message.content);
+        snack(context, tr("'${message.message.content}' copied to clipboard!"));
         break;
 
       case _MenuChoices.COPY_URL:
         FlutterClipboard.copy(message.file.url);
+        snack(context, tr("'${message.file.url}' copied to clipboard!"));
         break;
 
       case _MenuChoices.GET_STATS:

lib/ui/widgets/conversation_file_tile.dart

@@ -36,8 +36,11 @@ class _ConversationFileWidgetState extends State<ConversationFileWidget> {
   @override
   Widget build(BuildContext context) => Stack(
         children: [
-          !file.hasThumbnail
-              ? Container()
+          !file.hasThumbnail ||
+                  file.fileType == ConversationMessageFileType.IMAGE
+              ? Container(
+                  width: 0,
+                )
               : Opacity(
                   opacity: 0.8,
                   child: CachedNetworkImage(