Port edition_publishing JS tests from Qunit to Jasmine
Port edition_publishing JS tests from Qunit to Jasmine

This test is a bit strange as it just focuses on one module,
enableChangeNoteHighlighting, and not other aspects of the
edition_publishing file. It's likely a sign that the underlying JS file
should be split.

alphagov/whitehall,alphagov/whitehall,alphagov/whitehall,alphagov/whitehall