Commits for Ubercart Bulk Stock Updater

#897862 by hiddentao: Row filtering now works in the background, enabling browser to be more responsive when filtering on a large number of items.

#897862 by hiddentao: Changed how values get updated and shown as editable text fields. The new, more flexible system makes it easy to add more editable fields in future.

#897862 by hiddentao: Updated README.txt

#896042 by hiddentao: Changed how the bulk update table gets themed to use an overridable theme method.

#896042 by hiddentao: Changed Javascript to use Drupal.settings and Drupal.behaviours.

by hiddentao: Updated README.txt