Add UTM cookie tracking for registrations.
Add config model for cookie names.

ECOM-5539

2. Add site configuration overrides to theming/helpers.py
3. Move microsite.get_value from theming/helpers to site_configuration/helpers
4. Move microsite_configuration.microsite.get_value usages to site_configuration.helpers.values

* Partial changes for purchase tracking

* Continued changes for purchase tracking

* Clean up code quality issues

* Clean up code quality issues

* Responses to code review

* Fix code quality flaged issues

* Fix code quality flaged issues

* Fix code quality flaged issues

* Fix problem processing sailthru_content cookie

ECOM-1730

In addition to logging the user out of LMS, the logout view also logs users out of the IDAs to which they previously authenticated.

ECOM-4610

ECOM-1730

ECOM-4502

ECOM-4325

The get_or_create function is vulnerable to race conditions in MySQL, which can
cause the model LoginFailure to, in some cases, have more than one row for the
same user, breaking the login for that user.

Addinf functionality to expect and clean the error by deleting extra rows (by
oldest lockout date), leaving just one entry and allowing the user to login.

Replayed and squashed by @efischer19, initially commited by @laq

ECOM-3685

changes after feedback from matte

Allows support staff or global staff to view a list of a learner's
enrollments, and change enrollment modes. We generate a
ManualEnrollmentAudit record for these enrollment changes in order to
track updates. Additionally, enrollment changes are handled through
the enrollment API, which handles bookkeeping such as granting refunds
where appropriate.

ECOM-2825

Allows support staff or global staff to view a list of a learner's
enrollments, and change enrollment modes. We generate a
ManualEnrollmentAudit record for these enrollment changes in order to
track updates. Additionally, enrollment changes are handled through
the enrollment API, which handles bookkeeping such as granting refunds
where appropriate.

ECOM-2825

ECOM-2972

ECOM-2562

Please note that this is a squshed commit and the work of:
Symbolist, macdiesel, nedbat, doctoryes, muzaffaryousaf and muhammad-ammar

Add configuration model for enrollment refunds.

Use order info from otto in refund window calculation

Delete dupe tests. Extend tests to include window tests

Move ecom client from lib to djangoapps in openedx

Also remove useless docstrings where they were added to keep pylint
quiet.

Squashed commits:
[62dd3f1] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[eb32c9a] fixed the python quality issue of accessing protected fields
fixed the failing tests

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+2 squashed commits)
Squashed commits:
[4bfe22b] remove the delete case because there is none in current scenario
[802c259] moved the test case to user profile properties file

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[eb32c9a] fixed the python quality issue of accessing protected fields
fixed the failing tests

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[98d2415] added better log info message

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[62dd3f1] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[eb32c9a] fixed the python quality issue of accessing protected fields
fixed the failing tests

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+2 squashed commits)
Squashed commits:
[4bfe22b] remove the delete case because there is none in current scenario
[802c259] moved the test case to user profile properties file

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[eb32c9a] fixed the python quality issue of accessing protected fields
fixed the failing tests

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[4269e3b] disble protected access in pylint

invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[0246b1b] invalidate UserProfile.country cache when UserProfile is updated (+1 squashed commit)
Squashed commits:
[7c4fecf] invalidate UserProfile.country cache when UserProfile is updated