Correct an error in Resque config (the "resque_env" variable was being used for different purposes; it's been split in "resque_env" and "resque_conf_key" variables).

Also God starts resque-web in foreground (-F argument) so that it can more easily kill it. If we don't pass the -F argument, resque-web starts daemonized, which means we would have to keep track of the pid from God to be able to kill it.