WIP: Decaffeinate Test Files (Part 2)

Small fixes to support Okta SSO.

Add recover password endpoint

Convert mongo read_preference setting at a lower level.

Update edx-enterprise package to 0.53.19.

Merge remote-tracking branch 'upstream/master' into proversity/add-recover-password-endpoint [ci skip]

Pacing/highlights setting ui for courses

ENT-740: edx-enterprise version upgrade to 0.53.18

added redis version

Merge remote-tracking branch 'upstream/master' into proversity/add-recover-password-endpoint [ci skip]

fixup! trying to "fix" underscore syntax error

add cancel modal test

Fix quality issues.

Apply Nimisha's suggestions for my quality fixes.

Skip test_drop_unit_in_collapsed_subsection

Fix quality error

Updated course_has_highlights and get_week_highlights. Methods ensure that a course has highlights_enabled_for_messaging

Responded to Nimisha's review feedback.

Educator 1560 - Clean up labelling in the Discussion Add Post form

Show current tab even in high contrast mode

Fix focus loss when bookmarking a page in IE

Merge remote-tracking branch 'upstream/master' into proversity/add-recover-password-endpoint [ci skip]

Add `PersistentSubsectionGradeOverride` table in django admin

Add more ssencrypt tests

EDUCATOR-1624

Fix instructors ordering on program marketing page

Fixes to common/openedx tests that reference apps CMS doesn't use

Tag LMS Unit 1 tests that fail in Django 1.11

Tag LMS Unit 2 tests that fail in Django 1.11

VAL version bump

Fix header logo link to MKTG root.

In courseware, banner Logo links to Dashboard, footer logo
links to home page.

LEARNER-2881

Merge remote-tracking branch 'upstream/master' into proversity/add-recover-password-endpoint [ci skip]

LEARNER-2653 Update django-wiki version

Updated pull Translations