XCOM-94

Consolidate PUT and POST on the RESTful Layer.

Change URLs for API

Test cleanup.

Adding a course details URL to the enrollment API.

Change student to user

Change to v1, remove feature flag from API URLs

Updating student to user in tests

Re-ordering redirect urls to be evaluated last.

Adding pagination and testing.

Adding Django REST settings for pagination.

Revert "Re-ordering redirect urls to be evaluated last."

This reverts commit 4c9502daa383e49b46f8abec5456c271e5e24ccb.

Re-ordering redirect urls to be evaluated last.

Conflicts:
	common/djangoapps/enrollment/urls.py

Revert "Adding Django REST settings for pagination."

This reverts commit 9f8a54c41f34caa24818c88f1e75ac59f6ce5259.

Conflicts:
	common/djangoapps/enrollment/urls.py

Revert "Adding pagination and testing."

This reverts commit 0b2d46262abb78f5ad170700205e7fd28b6af942.

Additional testing, logging, and error messages.

Also fixes failing Python unit tests

Updating tests for views

Last chunk of tests and pep8 cleanup

Code Review cleanup.

Additional CR comments

Changing serialization of suggested prices.

Quick tweaks to the API

Aggregating course modes data.

Fixing the POST request endpoints.