Add ldap module

This module provides Drupal-compliant definitions for fields, bundles
and field instances based on a subset of OWL used to define application
profiles.
Add lde module

This module provides an entity type based on read-write linked data
principles.
Add ldf module

This module provides a field type, widget and formatter for linked data
fields.
Add oerworldmap module

This module implements the front-end for the OER World Map prototype.