- Make the correct (latest) gitlog show up instead of the second
- Show gitlogs for each entry when viewing detailed information for
  single course

Co-Authored-By: Jean-Michel Claus <jmc@edx.org>
Co-Authored-By: Brian Talbot <btalbot@edx.org>
Co-Authored-By: Tim Babych <tim@edx.org>
Co-Authored-By: Oleg Marshev <oleg@edx.org>
Co-Authored-By: Chris Rodriguez <crodriguez@edx.org>

Improve Django Admin Panel for Course Access Roles. Related to ECOM-857. Allows internal staff to easily use the Django Admin view to create new finance and sales admins.

Use binary search instead of linear search.
Add tests for saving asset metadata lists.
Refactor to use common code across modulestores.

Update the redeem code schema

Updating the redeem code schema.

Adding migration file.

Adding course mode support when redeeming a code.

Conflicts:
	lms/djangoapps/shoppingcart/views.py

Add sales admin privileges for redeem code generation.

Making sure redeem code URLs work for verified courses.

pep8 violations

Code Review and Test Cleanup changes

Added tests, fixed tests.

Updating the boolean checks in ecommerce template

Allow configuration to override links to mobile app stores

   during course import/export. Uses external code_block_timer module.
   Also, add script which validates XML file against an XSD file.
   Uses the unittest framework - but is currently skipped.

When user update the response after editing he would
be unablt to report/vote/endorse the response. This
problem was caused due to double binding of event in
backbone view.

TNL-720

TNL-920

children references on copy and delete w/ more than one parent

This file should not have been committed by #6447. It is causing issues for Mac OS X users, preventing checkouts and rebases.

Fix for MA-187 where a value error was thrown when
a course has a video directly under a section. This
PR handles the situations where a chapter or section
can be none, and then returns the appropriate url
if available.