Views D7 Date Views integration

The newest version of Drupal's Date module (7.x.2.0-alpha4) changes the way hook_views_data() call needs to pass settings to the filter and argument handlers, both now need the 'is date' => TRUE element.

This is sort of laid out here http://forum.civicrm.org/index.php/topic,21378.msg90721.html#msg90721