Add total sum of tasks per project in dashboard

fix #885

app/Template/dashboard/projects.php

@@ -9,6 +9,7 @@
             <th class="column-5"><?= $paginator->order('Id', 'id') ?></th>
             <th class="column-3"><?= $paginator->order('<i class="fa fa-lock fa-fw" title="'.t('Private project').'"></i>', 'is_private') ?></th>
             <th class="column-25"><?= $paginator->order(t('Project'), \Kanboard\Model\ProjectModel::TABLE.'.name') ?></th>
+            <th class="column-10"><?= t('Tasks') ?></th>
             <th><?= t('Columns') ?></th>
         </tr>
         <?php foreach ($paginator->getCollection() as $project): ?>
@@ -36,12 +37,16 @@
                     </span>
                 <?php endif ?>
             </td>
+            <td>
+                <?= $project['nb_active_tasks'] ?>
+            </td>
             <td class="dashboard-project-stats">
                 <?php foreach ($project['columns'] as $column): ?>
                     <strong title="<?= t('Task count') ?>"><?= $column['nb_tasks'] ?></strong>
                     <span><?= $this->text->e($column['title']) ?></span>
                 <?php endforeach ?>
             </td>
+
         </tr>
         <?php endforeach ?>
     </table>