enrollments.

The goal for this PR is to have a single mechanism for registering users and
reducing the number of places where special-casing for ccx courses is needed. The
migration at this point is purposefully limited to convert ccx memberships into
student enrollments when moving forward. No backward migration is in place at the
moment. The ccx membership tables are not removed at this time. It is possible to go
backwards and forwards multiple times with no errors or data loss.

Sets the Enrollment API free of the modulestore by replacing modulestore queries with calls to the CourseOverview model. Course deletion invalidates the corresponding CourseOverview. XCOM-462.

Skipped 'print' statement violations, as print() is Py3k syntax.

Changed enrollment api to set enrollment atributes if the course is
credit course

ECOM-1719

* Remove m2m relation between credit course and credit providers.
* Separate eligibility and provider APIs into different modules.
* Add API call for retrieving a user's eligibilities.
* Cache credit course list.
* Style the dashboard purchase button.
* Display a link for the credit provider on the dashboard.
* Add analytics events for clicks on the purchase button.
* Expose more credit models to Django admin and add search functionality.

Added CourseEnrollmentAttribute model

ECOM-1719

Implement the use of CCX opaque keys throughout the ccx code base

include the new custom ccx id package in the github checkouts list

update the coach dashboard wrapper to get CCX information from the incoming course_id, if possible

update function signatures for all view functions to expect CCX as passed by the dashboard wrapper (default to None), remove calls to get_ccx_for_coach as the ccx is passed in.

update reverse calls in python view code to use a CCXLocator for the URL instead of a CourseLocator

use CCXLocator where necessary

use course id to find ccx, instead of thread local

remove unused method and related tests

use course id for getting ccx

provide course id to the get_current_ccx method

ensure the course id passed in is a CourseKey instance of some type whether it starts out as a string or not

use the provided block to figure out what the course_id should be, then get the ccx for that

redirect to ccx dashboard using coach ccx if no ccx is passed in

update student dashboard listing for ccx to build an appropriate url from a CCXLocator, not from the course locator.

refactor building the ccx locator so we don't have to do it repeatedly

begin test refactoring after ccx_keys introduction

Ensure that when access checking happens, the course_locator form of a ccx locator is used.  This ensures that the access check happens against the course and it is not necesarry to duplicate the entire access control structure for the course.

pick up api change in ccx-keys

create and conditionally use a wrapper for the mixed modulestore returned by xmodule.modulestore.django.modulestore

the wrapper will strip and restore ccx values from CourseKey and UsageKey objects

fix return values on a few methods

remove unused symbol

pull updated ccx-keys package

set course_id on the caching descriptor system to avoid api incompatibilities in some subsystems

use ccx.course instead of self.course

fix get method to find course keys from blocks that are not themselves keys but have a location attribute (which will be a key)

if an item coming out of the db has children, restore the ccx to them as well

if the block passed in has a CCX key, unwrap that before we try to look up the override, otherwise it will never be found.

pick up a change in the ccx keys package that allows for stripping CCX identity from a usage key

begin writing tests to cover this modulestore wrapper

remove the switch_pocs view, the url pattern for it, and the tests that covered it

remove the ccx context and the middleware responsible for setting the current CCX.  These are no longer needed

all dashboard views should raise 404 if a ccx is not provided by the coach_dashboard decorator

code quality

prevent errors resulting from trying to `get` a ccx based on non-unique criteria.

remove obsolete usage of ACTIVE_CCX_KEY

fix setUp method for grading tests to properly create grades for the ccx rather than for the course.

clean up reverse calls

code quality

adding docstrings to clarify purpose of this patch

fix bug in getting ccx for coach

fix grading views to properly fetch a ccx-ified course so that grades for that version will be calculated

fix small errors in modulestore implementation

fix errant merge marker

update call to get_current_ccx after key refactoring merged with tab changes

enroll in a course but have not signed up yet.

- added the abstract and concrete layers of enrollment report provider
- created a celery task.
-added the button in the e-commerce reports section

added the enrollment data backend

added the payment data and start writing the test cases.

updated the code with the feedback suggestions and wrote some test cases.
- all the downloadable reports are now visible in the ecommerce download section.
Pending instructor tasks is also visible in the ecommerce section

added the fields in the user profile information
changed the report store configuration key
added the new http endpoint for financial reports to add more permissions for finance_admin to access.

fix quality issues

added test cases to check csv content data

rebased with master and resolved conflicts

changed the log messages

added the changes as per code clintonb suggestions during code review

updated the test cases for the finance_admin decorator

changes suggested by clinton.

Created and moved Table level filters to the Custom Manager for the CourseEnrollment model.

ecommerce.js file was loaded twice in the instructor_dashboard.js fixed the issues

added the registration code column in the csv

added the full gender in the csv file

Update data sources and add display name translations for the report columns

fix meta name

Make sure the reports section does not appear on non whitelabel courses

pylint fixes

expand out enumerated values

TNL-2044

TNL-1990

TNL-1860

TNL-1488

TNL-1606

TNL-1545

ECOM-579

Conflicts:
	lms/djangoapps/courseware/courses.py
	lms/djangoapps/instructor_task/api.py

refined entrance exam student attempts reset

Quality improvements 1/16

added rescore, delete state and task history functionality

added unit tests for entrance exam reset attempts

added unit tests for re scoring of entrance exam and task history

improved test coverage

Got rid of pep violation

feedback changes and added jasmine test

added more jasmine tests for Javascript changes

added bok-choy tests for UI changes

replaced input containing <p> tags with <label>

Removed ee element assertions to avoid js error

Added call to super.setUp()

changes based on feedback on 2/18

Writing tests in JS instead of coffee script

commit related to skip entrance exam 2/13

fixed bad-continuation quality error

fixed broken bok-choy test

changes based on feedback on 2/18

added js tests and removed coffee script tests

fixed broken bok-choy and unit tests

changes left while rebasing

rephrase test titles

do not need these libs

changes based on feedback on 2/24

changes text which was left

Changes based on feedback on 3/3

Name change is immediate, email change is multi-step.

Add client-side analytics event for LinkedIn Add to Profile button click.

Add management command for generating certs for testing.

Update styling of the certificate messages.

Add "source" parameter to LinkedIn add-to-profile URL.

Add platform name to certification name.

Style changes for linked in sharing on dashboard

ECOM-1028 update the migration and move the code into class method.