increased timeout to 5 minutes for idle connections to support long running pipes

modules/nginx/templates/nginx.conf.erb

@@ -61,6 +61,8 @@ http {
 	##
 	# Site Settings
 	##
+	proxy_read_timeout 300; # pipes can be idle up to 5 minutes
+	proxy_send_timeout 300;
 	include /etc/nginx/map.conf;
 	server{
 	  listen 80;