Update discussion.md

- fixed typo
- roles 'moderator' and 'administrator' are explained as bullet points.
Add logging to save item
adding certificate info to the grade dump
pep8
tabs to spaces
Translated &hellip;
Revamped + Enhanced Shibboleth support

* If a shib users type in their email on the regular login page,
  redirects them to /shib-login/
* Modify student.views.accounts_login to handle redirects
  generated by @login_required for courses that use shib for
  access control.
  Redirect those logins to /shib-login/?next=
Removing handling for ExternalAuthMap.MultipleObjectsReturned
Address @brianhw review comments

* Fix open redirect vulnerability
* Add Logging To AUDIT_LOG : Note I had to change existing tests
  that mocked AUDIT_LOG with this
* Use external_auth.views.SHIBBOLETH_DOMAIN_PREFIX in student.views
* Add a bunch of documentation
* PEP8 / Pylint
formulaequationinput: add capital greek letters and hbar to calc preview
actually flatten username suggestion to ascii
LTI module with tests
Remove ipdb.
Change h2 to h3
Fixing issues found by Anton during review of PR 804.

Changed use of IDs to classes. Simplified lti.js - now simple one function.
Updated tests.
Fixing Jasmine tests.
Acceptance test for LTI module (not finished), but working
Adds oauth checking to acceptance tests
updates
acceptance tests updated