CRM-14235 Preparation for Drupal 8
fix permission hook class
Drupal 8 preparation - move userFramework ID retrieval to UF classes
Drupal 8 prep - refactor retrieval of uniqID in synch class
Add Drupal 8 UF classes
towards drupal 8 - move common permissionDenied fn
Merge pull request #2540 from eileenmcnaughton/CRM-14235

Crm 14235