修复“彻底删除”

Change-Id: I66af06b2171f1317cbf6a7ab27b1fb3a20189c6b
接上了“注册后生成欢迎信息在infocenter”，但是必须是完成邮箱验证之后才会执行！

Change-Id: I8a0d759218bbd6578049b3a1db2f42a7abd493d7
Merge branch 'master' of https://github.com/Hahn-/GdutExchange.git
Change-Id: I53fba5879f7f0066a71162270371121b3972bf3f
完善了邮箱注册
Merge branch 'master' of https://github.com/Hahn-/GdutExchange.git

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

Change-Id: I39d4332cf549eaa4516993ee3faf6d678da76713