Upgrade Django to 1.11
Upgrade Django to 1.11

It is a Django LTS release, available through backports in Debian
Stretch and will be the default in Debian Buster.

fausecteam/ctf-gameserver,fausecteam/ctf-gameserver,fausecteam/ctf-gameserver,fausecteam/ctf-gameserver,fausecteam/ctf-gameserver