Add milestone marker in board task

app/Model/TaskFinder.php

@@ -93,6 +93,7 @@ class TaskFinder extends Base
                 '(SELECT count(*) FROM '.Subtask::TABLE.' WHERE '.Subtask::TABLE.'.task_id=tasks.id) AS nb_subtasks',
                 '(SELECT count(*) FROM '.Subtask::TABLE.' WHERE '.Subtask::TABLE.'.task_id=tasks.id AND status=2) AS nb_completed_subtasks',
                 '(SELECT count(*) FROM '.TaskLink::TABLE.' WHERE '.TaskLink::TABLE.'.task_id = tasks.id) AS nb_links',
+                '(SELECT 1 FROM '.TaskLink::TABLE.' WHERE '.TaskLink::TABLE.'.task_id = tasks.id AND '.TaskLink::TABLE.'.link_id = 9) AS is_milestone',
                 'tasks.id',
                 'tasks.reference',
                 'tasks.title',

app/Template/board/task_footer.php

@@ -63,4 +63,10 @@
     <?php if (! empty($task['time_estimated'])): ?>
         <span class="task-time-estimated" title="<?= t('Time estimated') ?>"><?= $this->e($task['time_estimated']).'h' ?></span>
     <?php endif ?>
+
+    <?php if ($task['is_milestone'] == 1): ?>
+        <span title="<?= t('Milestone') ?>">
+            <i class="fa fa-flag"></i>
+        </span>
+    <?php endif ?>
 </div>