Added QueueManager to process background jobs

app/Job/ProjectMetricJob.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace Kanboard\Job;
+
+/**
+ * Class ProjectMetricJob
+ *
+ * @package Kanboard\Job
+ * @author  Frederic Guillot
+ */
+class ProjectMetricJob extends BaseJob
+{
+    /**
+     * Set job parameters
+     *
+     * @access public
+     * @param  integer $projectId
+     * @return $this
+     */
+    public function withParams($projectId)
+    {
+        $this->jobParams = array($projectId);
+        return $this;
+    }
+
+    /**
+     * Execute job
+     *
+     * @access public
+     * @param  integer $projectId
+     */
+    public function execute($projectId)
+    {
+        $this->logger->debug(__METHOD__.' Run project metrics calculation');
+        $now = date('Y-m-d');
+
+        $this->projectDailyColumnStats->updateTotals($projectId, $now);
+        $this->projectDailyStats->updateTotals($projectId, $now);
+    }
+}