ECOM-1683 removing regen-cert code.

update reverification block version to fix error for 'skip_reverifica…

ECOM-1738

Responsive LMS cleanup

Modernize the dashboard button styles

Web Certificates: Addressing a11y feedback

Merge hotfix-2015-06-16 back to master

Ensure that is_hidden does not affect equality checks.

SOL-795 Executive Summary Report

* removing visual-based heading styles from 'sr-only' DOM elements
* revising default certificate view h1/heading copy
* revising DOM elements to use main/aside semantics
* revised edX/platform logo link alt text
* removed extra share/take home header text
* synced up add to LinkedIn profile copy

update the ICRV requirments status

After receiving the response from software secure update the ICRV
requirement status in CreditRequirementstatus table.

ECOM-1602

Add discussion API course endpoint

Increasing contrast in course nav accordions

Accessibility tweaks and patching RTL

Add a11y test for lms student dashboard

This endpoint returns course metadata relating to discussions as a
starting point for clients.

Allow course creation after deletion at same URL

MAYN-78 Extend Coupon/Discount Reports

remove in-memory files

Added columns to the CC purchases report. (added Qty and Total Discount. Moved the Total Amount to the last index).
Coupon code report.

Credit Eligibility Progress page display

1-Adding basic html for displaying eligibility table
2-Updated Eligibility Requirements Dynamically

ECOM-1523

no need to create zero by in memory images

added contents to test upload files

LMS: Modification in enrollment API

Added CourseEnrollmentAttribute model

ECOM-1719

Add comment endorsement to discussion API

certificates event tracking SOL-886

Create a common paginated list view

Fix bug in discussion API comment update