- remove all PHP "_ZMQ_" related dependencies from Pathfinder. PHP´s native Sockets work as replacement

- added status information for "WebSocket" installations to `/setup` page (e.g. active connections, startup time)
- removed "ext-zmq" as required PHP extension
- removed "react/zmq" as required Composer package
- removed "websoftwares/monolog-zmq-handler" as required Composer package

app/main/controller/api/rest/connection.php

@@ -17,7 +17,6 @@ class Connection extends AbstractRestController {
      * if a connection is changed (drag&drop) to another system. -> this function is called for update
      * @param \Base $f3
      * @throws \Exception
-     * @throws \ZMQSocketException
      */
     public function put(\Base $f3){
         $requestData = $this->getRequestData($f3);
@@ -71,7 +70,6 @@ class Connection extends AbstractRestController {
      * @param \Base $f3
      * @param $params
      * @throws \Exception
-     * @throws \ZMQSocketException
      */
     public function delete(\Base $f3, $params){
         $requestData = $this->getRequestData($f3);