fix_bug: 'users#new' 页面返回 500
修改layout页面
project页面加入基本样式
Merge branch 'develop' into feature/UI_develop

* develop:
  project页面加入基本样式
  修改layout页面
  fix_bug: 'users#new' 页面返回 500

Conflicts:
	app/views/users/_form.html.erb