Fix html display on icon click

Fix html tip display issue and an issue related to publish_event

Remove redundant ids from events

Tracking logs

assessment-rounded-percentage: Round score result in assessments

Some fixes for assessment workflow..

Fix feedback message display

display-name: Update usage of `display_name` to include upstream changes

It used to be on a separate proeperty - it's now using a real XBlock
field and its default value

Keep submit button disabled after answering in assessment.

Once a student submits an answer in assessment mode, he should not be allowed
to change it, so stop listening for changes once an answer has been submitted.

The change lister would re-enable the submit button if the student changed their
answer, which shouldn't happen in assessment mode.

Mentoring assessment mode

Add `display_name` to the Data export XBlock.

Make use of the new optional enforce_type flag

Move to use opaque keys

CSS Fixes - Additional fixes of CSS from QA

* Proper alignment when MRQ/MCQ choices span over more than one line
* Show disabled submit button upon first load
* Remove extra color from submit button
* Size of feedback title

Inspired from https://github.com/edx/edx-ora2/pull/330

Style changes

Only close the feedback popup when clicking on the close 'x' button

It used to close when any part of the popup would be clicked.