removes extraneous bootstrap css
removes extraneous bootstrap css

ndlib/scholarsphere,jeremyf/sufia,zhang4952/scholarsphere,samvera/hyrax,samvera/hyrax,samvera/hyrax,ndlib/scholarsphere,samvera/hyrax,zhang4952/scholarsphere,ndlib/scholarsphere,zhang4952/scholarsphere,jeremyf/sufia,zhang4952/scholarsphere