Redirect webserv.lua stdout and stderr to /dev/null

Fixes #758 (closed).

approved this merge request

added 3 commits

• dd81b923...b46be0d1 - 2 commits from branch knot:master
• 6e573099 - Redirect webserv.lua stdout and stderr to /dev/null

Compare with previous version

merged

mentioned in commit deaf2870

Thanks!