Gannt order default by plan date start

By Default fix gannt orderer by plan date start, I fix it and work fine

    $iterator = $DB->request([
        'FROM' => 'glpi_projects',
        'WHERE' => [
            'projects_id' => 0,
            'show_on_global_gantt' => 1,
            'is_template' => 0,
            'is_deleted' => 0
        ] + getEntitiesRestrictCriteria('glpi_projects', '', '', true),
        'ORDERBY' => 'glpi_projects.plan_start_date'

pluginsGLPI / gantt

Gannt order default by plan date start #65