Filter groups according to included profiles

Filter groups according to included profiles

This is a continuation of the contact groups filtering feature, which
allows admins to filter the public listings of contact groups on various
Civi pages by setting a Drupal variable with drush.

It is now possible to set a rule for a profile and for that rule to
automatically apply to standalone profile pages, contribution pages that
include the profile, and event pages that include it as well.

See comments in CRM/Contact/Form/Edit/TagsAndGroups.php for instructions
on how to set the variable via drush.