新增仿IOS未读通知图标提醒

Change-Id: Ide640bed6a349a800787f1b27b26920453fe34dd
Merge branch 'master' of https://github.com/Hahn-/GdutExchange.git

Conflicts:
	Lib/Action/Home/DetailAction.class.php

Change-Id: I5fec53f1eb4ca0c32222fad73cbd96585c60ebb0