Translate preferred languages in user account settings

Fix links to moved sections of the developer guide

TNL-4236 – Check for video transcripts before using it

The listed languages in the "preferred languages" input dropdown should
be translated in the user language.

Using edx-ccx-keys from PyPI

Safe Templatize: wiki templates

Badges V2 Feature Branch

ECOM-4016

Removing check from edx notes settings for OAUTH token timeout.

TNL-4336

Staff should be able to masquerade when previewing content.

Exposing absolute/CDN image URLs via Course API

ECOM-4013

asadiqbal08/WL-389: Update ubcpi XBlock version

Fix broken import due to merging oauth changes to master

Add finished() metric for login and registration.

making the accordion template escape by default

Merge oauth release into master via intermediary branch

Fix certificate exception view.

Custom icons for SSO providers

Call New Relic's finished() event marker to measure when the login and
registration pages actually become usable. This is important because the
pageLoad event can be distorted by analytics and marketing tools that
trigger after the page looks complete to the user.

Note: The "xfinished" PageAction is there to work around a New Relic bug
where "finished" events weren't making it into Insights. The reason we
have both is because finished() *does* still show up in session traces.

[PERF-298]

Deprecating REST APIs per DOC-2101, DOC-2653. Also adding the -W shpinx-build option per DOC-2530.