PLAT-1989 Upgrade django-openid-auth for Django 1.11 fix

Update min length of financial assisstance

LEARNER-2945

Course outline styling

EDUCATOR-2419 No upgrade deadline for professional courses

Refactor XSS Linter into smaller files

Replace main tag with div to compliance HTML5 standard

updated-translations

Fix css issues on oauth authorization page to make it responsive

Course outline page uses two main tags that violates modern
HTML5 standard that recommends only single main tag on a webpage.
To make it compliance with modern standard the enclosing main tag
is replaced with div which will improve accessibility.

LEARNER-4233

update edx-proctoring package

PLAT-1976 Add waffle switch to block auth_user write attempts

Reduce escaping on sandbox errors returned to learners

Add mismatched parenthesis detection to formula parsing

Return expected Dict when Discovery API fails or returns nothing

LEARNER-4100: Assume the cookie is set and don't try to get it again.

Revert "Revert "Revert "Merge pull request #17325 from cpennington/switch-ass…"

Bok Choy tests for studio-frontend assets page

add ConfigurationModelFixture for Studio Frontend Assets Page and add Bok Choy tests for Studio Frontend Assets Page

Fixed edX block structure api to load override data

Revert "Revert "Merge pull request #17325 from cpennington/switch-ass…

This reverts commit 67177ac7.

The original PR cause a breakage on production due to webpack building two different
copies of the asset_index.js bundle. However, it is unclear whether that was a
transitory issue or not. This commit restores the original PR to validate whether
the problem is reproducible.

Added waffle switch for files & uploads search UI

Check that a user enrollment exists in the course outline

provide data to SFE in DOM