+ add close lang.

module/testtask/lang/en.php

@@ -27,6 +27,7 @@ $lang->testtask->assign         = 'Assign';
 $lang->testtask->cases          = 'Cases';
 $lang->testtask->next           = 'Next';
 $lang->testtask->start          = "Start";
+$lang->testtask->close          = "Close";
 
 $lang->testtask->common         = 'Test task';
 $lang->testtask->id             = 'ID';

module/testtask/lang/zh-cn.php

@@ -27,6 +27,7 @@ $lang->testtask->assign         = '指派';
 $lang->testtask->cases          = '用例';
 $lang->testtask->next           = '下一个';
 $lang->testtask->start          = "开始";
+$lang->testtask->close          = "关闭";
 
 $lang->testtask->common         = '测试任务';
 $lang->testtask->id             = '任务编号';