- 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/system.php

@@ -68,7 +68,6 @@ class System extends AbstractRestController {
     /**
      * @param \Base $f3
      * @param $params
-     * @throws \ZMQSocketException
      * @throws \Exception
      */
     public function delete(\Base $f3, $params){
@@ -128,7 +127,6 @@ class System extends AbstractRestController {
      * @param Model\SystemModel $system
      * @param array $systemData
      * @return Model\SystemModel
-     * @throws \ZMQSocketException
      * @throws \Exception
      */
     private function update(Model\SystemModel $system, array $systemData) : Model\SystemModel {