Split task controller into smaller classes

app/Template/task/time_tracking_summary.php

@@ -0,0 +1,13 @@
+<?php if ($task['time_estimated'] > 0 || $task['time_spent'] > 0): ?>
+
+<div class="page-header">
+    <h2><?= t('Time tracking') ?></h2>
+</div>
+
+<ul class="listing">
+    <li><?= t('Estimate:') ?> <strong><?= $this->e($task['time_estimated']) ?></strong> <?= t('hours') ?></li>
+    <li><?= t('Spent:') ?> <strong><?= $this->e($task['time_spent']) ?></strong> <?= t('hours') ?></li>
+    <li><?= t('Remaining:') ?> <strong><?= $this->e($task['time_estimated'] - $task['time_spent']) ?></strong> <?= t('hours') ?></li>
+</ul>
+
+<?php endif ?>