get-config: WIP for #2. Start graphical.target.

Without the full name, systemctl start assumed it to be a service name.

bin/get-config

@@ -222,7 +222,7 @@ start() {
             rm /local/iptables >/dev/null 2>&1
             rm /local/iptables.prev >/dev/null 2>&1
             rm /local/mk-homedir >/dev/null 2>&1
-            /usr/bin/systemctl start graphical && exit 0
+            /usr/bin/systemctl start graphical.target && exit 0
         fi
         echo "Fatal error(s): missing or wrong web service reply, abort."
         exit 1