Temporary using a custom branch of bootstrap until the feature is merged upstream. The pull request is pending : https://github.com/twbs/bootstrap/pull/11373/files bzr revid: fme@openerp.com-20131106114827-gdlb53k4l42h5vq4
bzr revid: bth@tinyerp.com-20130823062541-nabdko619qkphdcz
bzr revid: fme@openerp.com-20130722145732-lnqjpbp6nbbcr3ko