detect if AdminHandler can be imported. close #333
detect if AdminHandler can be imported. close #333

jamesblunt/gunicorn,tempbottle/gunicorn,WSDC-NITWarangal/gunicorn,ephes/gunicorn,ccl0326/gunicorn,GitHublong/gunicorn,prezi/gunicorn,malept/gunicorn,urbaniak/gunicorn,gtrdotmcs/gunicorn,zhoucen/gunicorn,beni55/gunicorn,urbaniak/gunicorn,harrisonfeng/gunicorn,prezi/gunicorn,alex/gunicorn,zhoucen/gunicorn,1stvamp/gunicorn,elelianghh/gunicorn,MrKiven/gunicorn,gtrdotmcs/gunicorn,mvaled/gunicorn,jamesblunt/gunicorn,1stvamp/gunicorn,zhoucen/gunicorn,urbaniak/gunicorn,tejasmanohar/gunicorn,gtrdotmcs/gunicorn,keakon/gunicorn,alex/gunicorn,prezi/gunicorn,ccl0326/gunicorn,ammaraskar/gunicorn,mvaled/gunicorn,malept/gunicorn,wong2/gunicorn,mvaled/gunicorn,wong2/gunicorn,1stvamp/gunicorn,wong2/gunicorn,z-fork/gunicorn,jamesblunt/gunicorn,ccl0326/gunicorn,malept/gunicorn,alex/gunicorn