Issue #2011082 by jiff, phiit, swentel, pfrenssen: Replace drupal_container() with Drupal::service() in the field module.

Issue #2011084 by jiff | DmitryDrozdik: Replace drupal_container() with Drupal::service() in the file module.

Issue #2009666 by aaronott, jiff, jeroen12345: Replace theme() with drupal_render() in search module.