always rewriting nginx config on app upload
GA tracking for github
using NGINX_PORT instead of dev appserver port for SERVER_PORT environment variable
Merge pull request #854 from shatterednirvana/use-nginx-port-in-appserver-env

using NGINX_PORT instead of dev appserver port for SERVER_PORT env var
Merge pull request #847 from shatterednirvana/rewrite-nginx-on-app-update

always rewriting nginx config on app upload