added sphinxcontrib-httpdomain requirement
added sphinxcontrib-httpdomain requirement

sdss/marvin,bretthandrews/marvin,sdss/marvin,bretthandrews/marvin,albireox/marvin,sdss/marvin,albireox/marvin,albireox/marvin,bretthandrews/marvin,sdss/marvin,albireox/marvin,bretthandrews/marvin