lighttpd systemd service can be improved (related bug #856001, bug #838473, and bug #877870)
Changes in recent versions of lighttpd allow graceful restart
and other features
Since lighttpd 1.4.46:
https://git.lighttpd.net/lighttpd/lighttpd1.4.git/commit/?h=0ae6bab4a97f12a0c93200df36ac1741696eeed5
https://git.lighttpd.net/lighttpd/lighttpd1.4.git/diff/doc/systemd/lighttpd.service?h=0ae6bab4a97f12a0c93200df36ac1741696eeed5
