replace submit.cs with python.org in nav bar
replace submit.cs with python.org in nav bar

ucsb-cs8-s18/ucsb-cs8-s18.github.io,ucsb-cs8-s18/ucsb-cs8-s18.github.io,ucsb-cs8-s18/ucsb-cs8-s18.github.io,ucsb-cs8-s18/ucsb-cs8-s18.github.io,ucsb-cs8-s18/ucsb-cs8-s18.github.io