Move some Task model methods to the TaskFinder class

kanboard

@@ -7,6 +7,7 @@ use Core\Cli;
 use Core\Tool;
 use Model\Config;
 use Model\Task;
+use Model\TaskFinder;
 use Model\TaskExport;
 use Model\Notification;
 
@@ -47,7 +48,7 @@ $cli->register('export-csv', function() use ($cli, $registry) {
 $cli->register('send-notifications-due-tasks', function() use ($cli, $registry) {
 
     $notificationModel = new Notification($registry);
-    $taskModel = new Task($registry);
+    $taskModel = new TaskFinder($registry);
     $tasks = $taskModel->getOverdueTasks();
 
     // Group tasks by project