[edxnotes] use the correct url and update the API params

Extract course run with highest grades.

Change waffle flag for enrollment throttle to switch

This is really two separate things:

1. Fix the notes retirement endpoint to generate the correct notes API
url "/api/v1/annotations/" rather than the nonexistent "/api/v1/".

2. Update the API params to use "user" rather than "user_id".  This
depends on another PR in edx/edx-notes-api to make the corresponding
change on the API side.  This is required because "user" is the
hard-coded key that the permissions class uses to check the JWT token
user.

add script to detect dead code

Bump poll xblock version to 1.5.1 - removes warning.

[ENT-1029] edx-enterprise version bump 0.69.1

Rate limiting registration form validation end point.

This patch would ratelimit registration form validation
endpoint for anonymous user based on his/her ip.

LEARNER-3810

Revert "Switch container factory to webpack"

Add require_https to all is_safe_url calls

Change usages of is_safe_url to use new allowed_hosts instead of host

Exempt csrf on donate

Revert "OAuth2 API to call XBlock handlers"

PLAT-1746: Use Django 1.11 format_lazy instead of allow_lazy

Switch container factory to webpack

"host" parameter is deprecated and throws a warning

Remove SessionAuthenticationMiddleware from INSTALLED_APPS

Reapplies edx/edx-platform#17509

This reverts commit 0f7e2373.

Upgrade edx-ora2 to 2.1.17

Remove unused pytest markers for Django 1.11 upgrade

Remove temp django upgrade logic