Merge branch 'jannson' into sunset
添加活动邀请功能
Merge branch 'master' into sunset
数据库迁移到MySQL,添加infobox功能
Use mysql user `mba`
Add function infobox
实现首页可能认识的人
fix some link issues
Add mba widgets
fix /job bug
重写/person页手动输入框为选择框,重构数据库

Known Bug: 当提交完成后,选择框失效,原因是元素已经改变
Fix the known bug in last commit
Fix duplicated city  attribute  error
Add phone validate function

Add fonts
Add captcha
Fix some issues
Partly finish invite friend in /home
Merge remote branch 'origin/sunset' into jannson
improve job style by ysh
Add job2 by laoyang
Refactor and improve mba_widgets