Shards as valued attributes

Fix program listing and detail page styling

Fix paver timing

MA-2675: Skip 'endorsed_by=null' in discussion requested_fields=profile_image

Robust Grades API refactor

Use @needs to specify task composition for paver service checks, so that arguments are bundled correctly

This reverts commit acf50c44.

Adds ENABLE_SUBSECTION_GRADES_SAVED feature flag to both lms and cms. Also
installs the wiring that will allow robust grades to be used for courses
that enable it. This functionality is still gated by the feature flag
and should not be used until the remaining robust grades work is finished.

AC-549 updating pink

Fix a number of pylint violations

Remove JSHint dependency, config and paver/CI integration

Update Pattern Library pages to use new color scheme

Forgot Password leak info about valid accounts

ECOM-4703

TNL-5135

a first contribution to fix TNL-4204 byte sized bug