Remove unused analytics JS left over by 3rd party auth changes
CodeMirror should use monospace fonts.

TNL-197
Quality cleanup
Merge pull request #5112 from edx/sarina/quality-clean

Quality cleanup
Merge pull request #5113 from edx/renzo/remove-unused-js

Remove unused analytics JS left over by 3rd party auth changes
Merge pull request #5124 from edx/usman/tnl197-codemirror-font

CodeMirror should use monospace fonts.
Fix discussion error popup on http request abort
Merge pull request #5127 from aboudreault/discussion-request-abort-issue

Fix discussion error popup on http request abort
Video link obfuscation. [BLD-1230]
Added some Jasmine unit tests.
Add improvements.
Add a11y.
Few fixes.
More fixes.
Fix positioning.
Test correct a11y.
Add fix.
Fixed a few Jasmine tests.