OPENIDM-4509 - Update the roles README
[OPENIDM-4223] Updated samples for assignment refactoring
OPENIDM-4226 - Updates to the READMEs for the roles sample to align with relationships
OPENIDM-3478 CR-7455 Adjust effectiveRoles/Assignments code to cope with new format
CR-6796 - fix typos, http headers, and minor typography errors
OPENIDM-3165 / CR-6711 : Corrected the query filter as per Brendan's comments.
OPENIDM-3165 / CR-6711 : Added roles samples to address the main CRUD operations and role based provisioning. The linkqualifier role sample will be addressed at a later time. Also includes a correction to defaultMapping.js