BLD-1117: Add read-only list of Group Configurations.
Add FEATURE['ENABLE_GROUP_CONFIGURATIONS'] and os.environ['FEATURE_GROUP_CONFIGURATIONS'].
Merge pull request #4267 from edx/tim/feature-group-configurations

BLD-1217: Create feature flag for switching Group Configurations editing on and off
Fixes has_changes to search all the way to leaf nodes
skipping update assets, not just collectstatic, in unit tests
Add openedx-analytics discussion group to CONTRIBUTING file
Merge pull request #4299 from edx/clytwynec/skip_update_assets_for_unittests

skipping update assets, not just collectstatic, in unit tests
Merge pull request #4302 from edx/benmcmorran/fix-has-changes

Fixes has_changes to search all the way to leaf nodes
Merge pull request #4306 from edx/db/openedx-analytics

Add openedx-analytics discussion group to CONTRIBUTING file
Hide GroupConfiguration behind feature flag in cms/templates/settings.html.
Deleting a child of a unit should convert the unit to draft
if the unit is draftable but isn't yet draft.
Update translations (autogenerated message)
Clean up i18n paver commands
Merge pull request #4316 from edx/anton/group-experiments

BLD-1117, BLD-1217: Add read-only list of Group Configurations, Create feature flag.
Merge pull request #4314 from edx/sarina/070714-language-update

Sarina/070714 language update
Merge pull request #4315 from edx/bug/delete_draft

Deleting a child of a unit should convert the unit to draft
First attempt to fix split test
Revert "First attempt to fix split test"

This reverts commit a16f5487bc117b41e24ed33a1098e8d99cec9c6a.
asadiqbal08:[EX-6] Set up data models and shopping cart enhancements in the LMS

Added username into Authors file

[Ex-12] Add user to input coupon code in the Shopping Cart

[Ex-13] Discount should be reflected in the Payment confirmation page and email

added E-commerce Tab in Instructor Dashboard

added name/email in authors file

removed the is_active column, change the colors scheme, fixed bugs

wip

wip

test github account

STORE_BILLING_INFO set to True

cybersource api update, reference number updated, merchant_data removed from params

View Course buttons on receipt

link for course added to receipt

receipt.html view course button - func update

receipt.html course link update

move new CyberSource implementation to a separate file so that we can keep the original

remove config changes

remove config changes

remove coupon redemption during clear cart and update test cases

[Ex-11]added test cases(E-commerce Tab Instuctor Dashboard)

update data model max_length to 255

remove array paid_course_ids init in views.py

removed the is_active filter=false, added styling to the inactive coupon codes

remove coupon redemption during clear cart and update test cases

[Ex-11]added test cases(E-commerce Tab Instuctor Dashboard)

update data model max_length to 255

Add column to the list of coupons in the E-Commerce tab

Add ability for microsites to specify custom CyberSource secret configuration, i.e. run under different accounts

make the new CyberSource2 also microsite aware

updating migration for student and shopping cart apps

added user signup functionality that orignated from the Microsites

added non-microsite user signup tests

fix the hard coded callback URL to localhost

add comment

Modify e-commerce instructor tab to show a total amount above the coupon listings for admin finance user

made changes as suggested by diana khuang

add the CourseAccessRoles table to the Django Admin website

shopping cart coupon checkout changes as suggested by Jason Bau

changes are made according to the suggesstions on PR#4172

changes made in the coupons file

changes in the coupons get_coupon_info view

fix merge conflict resolution error

changes in the remove_coupon view json response

changes as suggested by David Baumgold

pep8/pylint fixes