apache2: add 'down' file so that runit doesn't start apache2 on boot;

postgresql config: set work_mem to 512MB;

run.sh: remove debugging output

run.sh: remove _wait and tty logic, just always sleep 2 seconds;

run.sh: restore createuser() and createdb() functions;

run.sh: preface import and startservices w/ startdb

run.sh: move createuser() and createdb() into initdb();

run.sh: add more control to render() via environment variables;

index.html: Serve simple OpenLayers example as Apache root document