rename footer files for wiki
Merge pull request #5252 from edx/adam/fix-wiki-footer

Merging.
Revert "username and email request for lti module"

This reverts commit 3f159ea52bc2bec2de436d25b1c6e61e02c375dd.
For microsites, since we don't have a footer override yet for django templates, remove the footer all together
Fix tests not using ModuleStoreTestCase

Some tests test were using `CourseFactory` buy not deriving from
`ModuleStoreTestCase`, introducing a course leaks that broke other
unrelated tests.
Modify notification_pref tests to avoid changes to module store

Calling the client root was causing the module store to be modified,
affecting test in other Django applications that rely on the default
state of the module store.
Add edX OAuth2 provider with OpenID Connect support
Merge pull request #5260 from edx/cdodge/remove-edx-footer-for-microsites

For microsites, since we don't have a footer override yet for django tem...
Revert the changes from PR 5152

The changes in 5152 appear to have introduced a
 performance problem on stage, so we're going to
 revert them for now.
Annotation Tools: Adding Try-Catch for anonyous_student_id issue in staging

 - changed message and added i18n
Merge pull request #5263 from rocha/rc-oauth2-provider

Add edX OAuth2 provider with OpenID Connect support
Merge pull request #5267 from lduarte1991/lduarte-harvardx-pr27

Annotation Tools: Adding Try-Catch for anonyous_student_id issue in staging
Merge pull request #5266 from edx/andya/remove-pr-5152

Revert the changes from PR 5152
Added tests for unparsable matlab grader response.

TNL-388
If matlab grader sent unparsable response, show error message
instead of trying to render the response.

TNL-388