Update sphinx from 1.7.7 to 1.7.8 (#773)
Update sphinx from 1.7.7 to 1.7.8 (#773)


testbhearsum/balrog,testbhearsum/balrog,mozbhearsum/balrog,testbhearsum/balrog,testbhearsum/balrog,mozbhearsum/balrog,mozbhearsum/balrog,mozbhearsum/balrog