How to get a CiviCRM popup form (eg create new Group / Tag etc) working via a Drupal link

Question

We wanted to let a Drupal user 'create new group' in civicrm without needing to go in to CiviCRM itself.

Clues from here suggested we might be able to do it without using API etc. The suggestion was that

 putting <a class="crm-popup" href="/civicrm/group/add?reset=1"> Create a New Group </a> into block body (Full HTML input format)

may suffice. It didn't as it seems to require 'something' to initialise civicrm

Answer 1

At this point it looks as if putting

civicrm_initialize(); 
$manager = CRM_Core_Resources::singleton();
$manager->addCoreResources();

in to a module in hook_init() does the job.