The tertiary navigation added for quiz module.
- Added tertiary nav buttons for the edit, attempt and view page
- urlselector is added to the overrides page to access user/groups
- The secondary tabs are highlighted when user navigates to
each page in quiz.
- Updated the behat tests for the changes made.
This commit is mostly Sujith's work, with further changes by
Tim Hunt <T.J.Hunt@open.ac.uk> so we share the blame/credit.
3458d159e1