Add timer for subtasks and remove settings for subtask time tracking

app/Controller/Timer.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Controller;
+
+/**
+ * Time Tracking controller
+ *
+ * @package  controller
+ * @author   Frederic Guillot
+ */
+class Timer extends Base
+{
+    /**
+     * Start/stop timer for subtasks
+     *
+     * @access public
+     */
+    public function subtask()
+    {
+        $project_id = $this->request->getIntegerParam('project_id');
+        $task_id = $this->request->getIntegerParam('task_id');
+        $subtask_id = $this->request->getIntegerParam('subtask_id');
+        $timer = $this->request->getStringParam('timer');
+
+        if ($timer === 'start') {
+            $this->subtaskTimeTracking->logStartTime($subtask_id, $this->userSession->getId());
+        }
+        else if ($timer === 'stop') {
+            $this->subtaskTimeTracking->logEndTime($subtask_id, $this->userSession->getId());
+            $this->subtaskTimeTracking->updateTaskTimeTracking($task_id);
+        }
+
+        $this->response->redirect($this->helper->url->to('task', 'show', array('project_id' => $project_id, 'task_id' => $task_id)).'#subtasks');
+    }
+}