Use searx as default search for users

src/freedombone-app-searx

     systemctl daemon-reload
     systemctl start searx.service
 
+    DEFAULT_SEARCH="http://$SEARX_ONION_HOSTNAME"
+    update_default_search_engine
+
     SEARX_PASSWORD="$(create_password ${MINIMUM_PASSWORD_LENGTH})"
     ${PROJECT_NAME}-pass -u $MY_USERNAME -a searx -p "$SEARX_PASSWORD"
     if grep -q "$MY_USERNAME:" /etc/nginx/.htpasswd; then