OPENIDM-3401 CR-7203 : updating the roles sample folder to remove references of link qualifier which is addressed in a different sample.

CR-6796 - fix typos, http headers, and minor typography errors

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