复杂表单

http://www.bootply.com/blades973/jwQrHNs1IO#
http://formvalidation.io/examples/complex-form
http://stackoverflow.com/questions/27825134/bootstrap-complex-form-layout-for-combined-vertical-inline-fields
http://limcheekin.blogspot.com/2012/08/twitter-bootstrap-multiple-columns-form.html