Change reference to listening port to 8080

The template used by scripts/new_webmachine.sh (wmskel) sets the
listening port to 8080 (in priv/templates/src/wmskel.app.src), not 8000
(as is used in the demo app).
Merge pull request #218 from derek121/port-used-in-docs

Change reference to listening port to 8080

Reviewed-by: reiddraper
Change to use application:ensure_all_started/1

When running start.sh (in demo/), when mochiweb is then started, a
failure occurs due to ssl not having been started. Using
ensure_all_started/1 rather than start/1 fixes that.