-Updated middleware setting to use use middleware insted of
middleware_classes
-github install of django-method-override fork to support
new style middleware in django1.11

Currently there is no option to schedule bulk emails to be sent
out at a specific time for instructor led courses. It would reduce
the effort required to create an engaging course if instructor led
course teams had the option to turn on weekly highlight emails as
well.

PROD-575

Added additional 'exception' parameter to function headers.
Disabled pylint warnings for missing docstring and unused arguments.

made changes to test with previous version of django-waffle

updated the query count to test

testing with version 0.13

testing with version 0.14

testing with version 0.15

added version 0.14

updated the django-waffle version to use 0.18

updated the django-waffle version to use 0.16

updated the query counts to pass tests

ran make upgrade

updated the django-waffle to support django 2.2

made changes to test with previous version of django-waffle

updated the query count to test

testing with version 0.13

testing with version 0.14

testing with version 0.15

added version 0.14

updated the django-waffle version to use 0.18

updated the django-waffle version to use 0.16

updated the query counts to pass tests

removed the pdb statements

ran make upgrade

Read STATICFILES_STORAGE_KWARGS from config to allow separate storage configuration for static assets

* Added pytest-json-report plugin
	- modifying app-opts in setup.cfg
	- adding hook to all conftest.py files in repo
	- setting report to be saved to test_root/log/warnings.json
	- Writing custom logic to save json report to avoid overwrite if pytest called twice
This was created to allow us to easily parse through test warnings in jenkins

This will remove imports from __future__ that are no longer needed.

https://docs.python.org/3.5/library/2to3.html#2to3fixer-future

https://docs.python.org/3.5/library/2to3.html#2to3fixer-asserts

Specifying a namespace in django.conf.urls.include() without providing an app_name is deprecated.
Adding the app_name attribute in the included module.

We fixed this for when we sand_tarballs for local but not for when we
used django storages.  This should fix the filename when we get the file
from storages.

Quality / encoding

Remove comments

remove debug

Changed service implementation to make unit testing easier

Corrected service

code style

unit test cleanup

Clean up imports

Implementation details:
* Anonymous users are assigned a unique ID (like 
  `anon42c08f9996194e2a9339`) which gets stored in the django session.
  `block.scope_ids.user_id` and `block.runtime.anonymous_student_id`
  will both return this value.
* User state for anonymous users is stored in the django cache and
  automatically expires as the cache gets pruned. Because user state is
  stored, anonymous users can use interactive blocks like capa problems.
* There is no mechanism for upgrading to a registered account and
  keeping user state since the user state store for anonymous users
  (EphemeralKeyValueStore) is completely different than the one for
  registered users (DjangoKeyValueStore/"CSM"), and has no "list all
  keys" functionality.
* "User State Summary" field values are shared among [recently active]
  anonymous users but are not shared with registered users.
* Anonymous users can only access the `public_view` of XBlocks, not the
  regular `student_view`.

We make sure the temp file name is a string because we combine it with
other string components with path later.

- retires toggle DISABLE_DEPRECATED_LOGIN_POST
- permanently removes /login_post

Now that studio signin has been retired, we are able to remove the
unused /login_post endpoint.

ARCH-1253

This completes the work started in https://github.com/edx/edx-platform/pull/19453
to use the LMS login and registration for Studio, rather than Studio
providing its own implementation.

LMS login/registration are being used for the following reasons:
1. LMS logistration properly handles all SSO integrations.
2. A single logistration is simpler to maintain and understand.
3. Allows Studio to work more like all other IDAs that use LMS
logistration.

The original switch to use LMS logistration for Studio also added the
toggle `DISABLE_STUDIO_SSO_OVER_LMS` to provide the community some
additional time for switching. This commit removes this toggle, which
at this point means all deployments will use the LMS logistration.

This change requires sharing cookies across LMS and Studio. Should that
prove to be a problem for certain Open edX instances, there are
discussions of possible alternative solutions.
See https://github.com/edx/edx-platform/pull/19845#issuecomment-559154256

Detailed changes:
* Fix some Studio links that still went to old Studio signin and signup.
* Remove DISABLE_STUDIO_SSO_OVER_LMS feature toggle.
* Remove old studio signin and signup pages and templates.
* Fix url name "login", which had different meanings for Studio and LMS.
* Use the following settings: LOGIN_URL, FRONTEND_LOGIN_URL,
FRONTEND_LOGOUT_URL, and FRONTEND_REGISTER_URL.
* Redirect /signin and /signup to the LMS logistration.
* Add custom metric `uses_pattern_library`.
* Add custom metric `student_activate_account`.
* Add Django Settings to allow /signin, /signup, and /login_post to be
disabled once ready.

This work also relates to ARCH-218 and DEPR-6.

ARCH-1253

PROD-1026