Upgrade gunicorn to 19.4.4
Upgrade gunicorn to 19.4.4

pypa/warehouse,dstufft/warehouse,dstufft/warehouse,wlonk/warehouse,pypa/warehouse,pypa/warehouse,wlonk/warehouse,alex/warehouse,alex/warehouse,dstufft/warehouse,karan/warehouse,wlonk/warehouse,alex/warehouse,dstufft/warehouse,karan/warehouse,alex/warehouse,pypa/warehouse,karan/warehouse,karan/warehouse,karan/warehouse,alex/warehouse