secure-cookies: Allow to use secure HTTPS cookies (Django setting)

Cf https://docs.djangoproject.com/en/1.4/ref/settings/#std:setting-SESSION_COOKIE_SECURE
Added instructor persmission to _has_access_error_desc() in courseware.access.

TNL-208
rename footer files for wiki
Disable sending activation email also when doing external_auth and setting BYPASS_ACTIVATION_EMAIL_FOR_EXTAUTH=True
Merge pull request #5252 from edx/adam/fix-wiki-footer

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

This reverts commit 3f159ea52bc2bec2de436d25b1c6e61e02c375dd.
Upgrade scipy, lxml, boto
For microsites, since we don't have a footer override yet for django templates, remove the footer all together
Update paver bok_choy (test) commands to reflect new default vars.
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.
Fixed problems with psychometrics

- Update key comparisons for Opaque Keys
- Search for 'problem_check' instead of 'save_problem_check' when
  filtering TrackingLogs.
Add edX OAuth2 provider with OpenID Connect support
Merge pull request #5096 from marcore/bypass-activation-email-extauth

Disable sending activation email also when doing external_auth and setting BYPASS_ACTIVATION_EMAIL_FOR_EXTAUTH=True
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.
Merge pull request #5261 from edx/benp/fix-paver-failures

Update paver bok_choy (test) commands to reflect new default vars.
Merge pull request #5253 from mitocw/bdero/fix-psychometrics-opaque-keys

Fixed problems with psychometrics (Opaque Keys)
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