start_webserver does not detach the process

[non7top]

Commit 325367fbc6dcf7e9fea1abc50acc49d78bd328a6 introduced a change in admin/start_webserver.sh and as a result the main process no longer detaches itself from active console.

[netsafe]

well, that's a benefit change - use systemd or daemontools for proper process supervising