Merge pull request #18 from laichendong/master

update
使IE支持placeholder属性
完善首页的各种功能
Merge pull request #19 from laichendong/master

update
完善表单验证、管理界面
Merge branch 'master' of https://github.com/laichendong/talent into laichendong-master2

Conflicts:
	app/controllers/subject.js
Merge pull request #14 from lee52547/master

新增主题和后台首页完善