TNL-6250

ECOM-5936

TNL-5245

This reverts commit d59ab18b, reversing
changes made to 0ebab35e.

Use this middleware and its helpers to accumulate custom New Relic
metrics on a per-request basis.  If, while handling a request, the app
does not accumulate any metrics, this middleware is a very lightweight
no-op.

This commit also enables the middleware!

PERF-354

moment-timezone require config

jasmine test fix, duplicate req. cleanup

* Add openedx.core.lib.xblock_builtin.get_css_dependencies and get_js_dependencies,
  which respect PIPELINE_ENABLED setting when determining dependencies.
* Move new discussion-related Sass files into discussion subdirectory.
* Use "load_unicode" instead of "render_template" to load JS to add to fragment for DiscussionXBlock.
* Remove unused "course" parameter from context for DiscussionXBlock.student_view.
* Add RTL stylesheet for DiscussionXBlock, and enable the block to load correct stylesheet.
* Load MathJax only once, and include code for configuring MathJax in discussion bundle.
* Make sure username renders correctly in DiscussionXBlock response header.
* Move WYSIWYIG Markdown editor styles to _build-discussion.scss.
* Remove unnecessary import of discussion/utilities/v1-compatibility from _build-discussion.scss.
* Keep courseware-chromeless.html in sync with courseware.html.
* Load CSS for discussions on Teams tab.  This makes it possible to remove CSS for discussions from Sass files for "Course" tab.
* Load js/src/tooltip_manager.js, jquery.autocomplete.js and jquery.autocomplete.css on "Course" tab.

improvements to the command line interface for caching

Show verification expiration message on learner dashboard and allow them to reverify if expiration is X days away.
ECOM-2979