Improve gmid.service

Changed gmid.service to not to fork the server and forced to run under
user "gmid".  gmid now waits for the network stack beeing available
before starting. Also "gmid" is now the syslog id.

contrib/gmid.service

@@ -1,14 +1,21 @@
 [Unit]
 Description=The gmid Gemini server
-After=syslog.target network.target
+Documentation=https://gmid.omarpolo.com/
+After=network-online.target syslog.target 
 Wants=network-online.target
 
 [Service]
-Type=forking
-ExecStart=/usr/local/bin/gmid -c /etc/gmid.conf
-# to start the daemon as a dedicated user:
-#User=_gmid
-#Group=_gmid
+Type=simple
+User=gmid
+Group=nobody
+ExecStart=/usr/local/bin/gmid -f -c /etc/gmid.conf
+ExecStop=/bin/kill -TERM $MAINPID
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=on-failure
+RestartSec=30
+StandardOutput=journal
+StandardError=inherit
+SyslogIdentifier=gmid
 
 [Install]
 WantedBy=multi-user.target