modify text in menu item

src/langs/zh_Hans.txt

@@ -23,7 +23,7 @@ Delete=删除任务
 Select All=全部选中
 Select None=全部不选
 Select Invert=反向选择
-Select All Failed Task=全选失败任务
+Select All Failed Tasks=全选失败任务
 Select All Completed Tasks=全选已完成任务
 Display Order=显示顺序
 Copy Download Url=复制下载链接

src/langs/zh_Hant.txt

@@ -23,7 +23,7 @@ Delete=刪除工作
 Select All=全部選中
 Select None=全部不選
 Select Invert=反向選擇
-Select All Failed Task=全選失敗工作
+Select All Failed Tasks=全選失敗工作
 Select All Completed Tasks=全選已完成工作
 Display Order=顯示順序
 Copy Download Url=複製下載連結

src/scripts/config/defaultLanguage.js

@@ -27,7 +27,7 @@
             'Select All': 'Select All',
             'Select None': 'Select None',
             'Select Invert': 'Select Invert',
-            'Select All Failed Task': 'Select All Failed Task',
+            'Select All Failed Tasks': 'Select All Failed Tasks',
             'Select All Completed Tasks': 'Select All Completed Tasks',
             'Display Order': 'Display Order',
             'Copy Download Url': 'Copy Download Url',

src/views/list.html

@@ -159,9 +159,9 @@
                     </ul>
                 </li>
                 <li ng-if="hasRetryableTask()">
-                    <a tabindex="-1" class="pointer-cursor" title="{{'Select All Failed Task' | translate}}" ng-click="selectAllFailedTasks()">
+                    <a tabindex="-1" class="pointer-cursor" title="{{'Select All Failed Tasks' | translate}}" ng-click="selectAllFailedTasks()">
                         <i class="fa fa-fw"></i>
-                        <span translate>Select All Failed Task</span>
+                        <span translate>Select All Failed Tasks</span>
                     </a>
                 </li>
                 <li ng-if="hasCompletedTask()">