Restart nginx when restarting mesh networking

src/freedombone-image-mesh

 function mesh_restart_daemons {
     systemctl restart avahi-daemon
     systemctl restart tox-bootstrapd
+    systemctl restart nginx
     echo $'Daemons restarted' >> $INSTALL_LOG
 }
 
 
     # git ssb site
     if [ -f /etc/nginx/sites-available/git_ssb ]; then
+        sed -i "s|server_name .*|server_name ${HOSTNAME}.local;|g" /etc/nginx/sites-available/git_ssb
         ln -s /etc/nginx/sites-available/git_ssb /etc/nginx/sites-enabled/git_ssb
     fi
 }