LEARNER-2305

Only show course sock to English readers.

This reverts commit e2ee48c3.

This reverts commit 441bccf4.

Fix course unenroll dialog's incorrect message rendering. LEARNER-2033

LEARNER-1510

TNL-3644

Having the messeges embedded into onclick attributes was fragile because
it could break if the translated string contained special characters
such as single quotes.

Rather than trying to escape the special characters inside the onclick handler,
move the translatable strings into separate h-escaped data attributes and interpolate
the values in the (already existing) jQuery click handler rather than in the
inline onclick handler.

This makes the javascript code more consistent as well as fixes the problem
where the popup would break if translation included single quotes.

Only the course number was displayed in the course unenrollment
confirmation popup dialog.

Include full course display name to make it more user friendly.

removed JavaScript function specific to the upsell toggle
removed bok choy test
Removed all referenced to toggleExpandMessage()

TNL-1516

- reversing the positions of the sidebar and course listing
- html for new social icons (not currently wired up)
- new actions dropdown for unenrollment and email settings
- partial reorganization of dashboard.scss styles
- text fix for unenrollment
- added missing endif, p/hgroup closures
- reverted la.course-item
- removed extra operator
- fixed broken bok choy test

Add client-side analytics event for LinkedIn Add to Profile button click.

Add management command for generating certs for testing.

Update styling of the certificate messages.

Make HTML comments Mako comments