Custom management command for data migration in Schedule

Automate retry_failed_photo_verification mgt command

Account Activation cleanup

Add last_login and date_joined to the student profile export

Remove items from a different dictionary than the one we're iterating over.

iterating over.

[REV-954] get optimizely from cloudflare

This patch would enable a user to run management
command via jenkins job. Verification ids
are injected via a configuration model.

PROD-1005

Add api support to let users opt out of email updates

remove UPDATE_LOGIN_USER_ERROR_STATUS_CODE toggle

Python Requirements Update

Feanil/handle pickling failure

Scheduled emails show "unsubscribe" link if waffle switch
`schedules.course_update_show_unsubscribe` is enabled, and
settings.ACE_ENABLED_POLICIES respects `bulk_email_optout`.

API endpoint allows GET/POST requests, which:

* GET asks for confirmation of opt-out
* POST accepts "unsubscribe" or "cancel", where "unsubscribe" creates the
  Optout entry, and "cancel" does nothing.

Fixes flaky tests:

* The resolvers handle users in "bins", which are groups that depend on the user ID.
* The test user ID varies depending on the test order.
* This change ensures that the bin requested matches the user for the test.

create CSM service

The toggle UPDATE_LOGIN_USER_ERROR_STATUS_CODE was added to roll out a
breaking change for `login_user` auth errors to return a 400 rather than
a 200.

This toggle was enabled in Production on 12/5/2019 with seemingly no
adverse affects.

ARCH-1253

fix flaky test_login unit test

ARCH-1253

Upgrade edx-enterprise

Students can't create team in an instructor-managed topic

Move account_settings into user_api.

Add ENABLE_COURSEWARE_SEARCH_FOR_COURSE_STAFF flag

log exception for further context

We use pickling in conjunction with caches in these cases so we should
be able to fallback to the uncached behavior if the pickled data is
corrupt in some way.

eg. it's a python 2 pickle we don't know how to read.

When going between python 2 and python 3.5 we can get pickeld course
structires that are incompatible no matter what we do do to the bug
linked in the comment.  In this case, handle the error and delete the
corrupt data from the cache.

Making this fairly generic because if we have any bad data in cache we
don't want it to blow up the whole process.  Just delete the bad data
and try again.

ARCH-1253: return json for third party auth failure

Returning JSON from `login_user` for third party auth failures makes
the response more consistent with all other `login_user` responses.

The only calls to `login_user` with this failure are processed by
`shim_student_view` which will in-turn remove this JSON. This improves
the `login_user` response in advance of switching the logistration page
to use `login_user` without `shim_student_view`.

ARCH-1253