Prepend new tasks

Author: Simon Karlen

src/models/Task.php

@@ -155,6 +155,7 @@ public function behaviors()
             ],
             'sortable' => [
                 'class' => ContinuousNumericalSortableBehavior::class,
+                'prependAdded' => true,
                 'sortAttribute' => 'sort',
                 'scope' => function () {
                     return Task::find()->where(['bucket_id' => $this->bucket_id]);