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

   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.

ECOM-335 Created new branch from master and put all changes from aamir-khan/ECOM-335-caching-api into this branch.

of dangling children references to blocks.
TNL-1141

Created dedicated LibraryRoot test file and moved rendering tests from  modulestore/tests/test_libraries

The only supported mode is currently 'random', so it doesn't make sense
to expose the 'mode' in the edit form.

Most of the updates are related to the My Courses -> Studio Home change.