This is the third in a series of commits to create a Python API for the LMS program_enrollments app. It does the following: * Creates api/ folder. * Moves link_program_enrollments.py to api/linking.py * Creates api/reading.py for enrollment-fetching functions. * Updates rest of app to use api/reading.py when it was going directly through the models before. * Other misc. cleanup (isorting, unicode_literals, line breaks, etc). Still to do: * Create api/writing.py and update app to use it instead of going directly through models. * Create api/reset.py and api/expire.py, which the management commands call out to. EDUCATOR-4321
LMS (Learning Management System) -------------------------------- This directory contains code relating to the student portal for edX.