Please note that this is a squshed commit and the work of:
Symbolist, macdiesel, nedbat, doctoryes, muzaffaryousaf and muhammad-ammar

Revert disable check button on save

Fix optimizing of draggabilly and json2

This reverts commit 99cca057.

This reverts commit bc6caea6.

Fixed admin issues

change 'routing' for some reports which go to potentially backlogged …

asadiqbal08/SOL-1379 - Removed the limit on the number of lines in a title.

- Using raw ID field for user fields for enrollment and user profile admin
- Including user data in enrollment admin queryset

Course Blocks API

Course Blocks App MA-1556

Fixes for chrome automation:

Add response times to get_many/set_many/delete_many.

Update translations (autogenerated message)

Clytwynec/add paver test a11y

adds an accessible label to the search input and the search button

Updated Zendesk error handling

Fix date summary blocks for courses without an end date.

MA-1044 DiscussionTopic - Added bulk operations

Remove legacy MITX_FEATURES reference

Properly logging exceptions so we have the complete stacktrace.

ECOM-2792