This is a follow up from MST-16, which was commited
in 3858036a.

Changes:
* Enrich course teams_configuration from a plain Dict
  to a custom XBlock field that uses the new TeamsConfig
  wrapper class.
* Remove teams_conf property from course, as the previous
  change made it redundant.
* Update teams_enabled implementation.
* Remove teams_max_size field from course, which is
  no longer semantically correct, as max team size
  is now defined on a teamset level.
* Remove teams_topics in order to discourage use of raw
  teams config dict.
* Add convenience properties teamsets and teamsets_by_id
  to course.
* Allow periods and spaces in teamset IDs to avoid breaking
  existing course teams.

Some parts of the code still use the old raw config data
(identifiable by searching "cleaned_data_old_format"),
which we expect to be slowly factored away as we build
new teams features. MST-40 has been created to remove any
remaining references if necessary.

MST-18

* fix: bokchoy test

* fix: remove pdb break

Parse transcripts json to compare logically.

This is to deal with a special issue in the video descriptor xml output.
The value of the transcript attribute of the video tag is a serialized
json string.  This can have comparison problems in python3 where the order
of the dictionary output is not gauranteed to be the same. So the strings
don't match equally.  We convert the parsed json instead so that the
comparison can be correct.

added conditional logs for RCA

enable video url re-write flag for all the courses

Create data migration to populate FBEEnrollmentExclusion Table

Move password reset logic and code to user_authn.

Fix static urls in pdf_viewer.html to correctly display pdf viewer fo…

[REV-693] Create table to keep track of FBE holdback experiment enrollments

updated the csv DictReader to make the csv output compatible across both python versions -BOM-993

REV-705

* Upgraded dependencies

* using six.assertCountEqual

* Fix type mismatches in css migrations

Python Requirements Update

Fix program card for smaller screens like ipad.

Text was overflowing from card on screens containing resolution
between 768 to 810 pixels.

PROD-748

ENT-2437 | get_enterprise_customer_for_learner method replaced with e…

updated the csv reader to make the csv output compatible across both python versions

added the encoding argument to unicodecsv.DictReader method

updated the csv file read process to accomodate different input types

changes made to fix issues with UniversalNewLineIterator

changes made as suggested

changes made as suggested

changes made to fulfill quality check requirement to pass quality check

minor changes

add encoded video key check in video transformer

fix(i18n): update translations

Move RegistrationFormFactory from user_api to user_authn

Use latest sphinxcontrib-openapi on GitHub to get a feature we need

And get_registration_extension_form.