TF-1983 Add CreateFilters button in empty thread view widget

(cherry picked from commit 5eed73198c868448cfbc3c93600176aa15bf62f4)

lib/main/localizations/app_localizations.dart

@@ -3233,4 +3233,31 @@ class AppLocalizations {
       name: 'quotaErrorBannerMessage'
     );
   }
+
+  String createFolderSuccessfullyMessage(String folderName) {
+    return Intl.message(
+      'You successfully created $folderName folder',
+      name: 'createFolderSuccessfullyMessage',
+      args: [folderName]
+    );
+  }
+
+  String get folderCreatedTitle {
+    return Intl.message(
+      'Your folder is just created',
+      name: 'folderCreatedTitle');
+  }
+
+  String get folderCreatedMessage {
+    return Intl.message(
+      'To begin using this mailbox, you should add some rules to organize all of your mail in your own way.',
+      name: 'folderCreatedMessage');
+  }
+
+  String get createFilters {
+    return Intl.message(
+      'Create filters',
+      name: 'createFilters');
+  }
+
 }