This reverts commit 31a3a6cb.

* Upgraded dependencies

Upgraded xblock-google-drive to latest commit hash.

- edx-sga recently released new release that supports python 3.5

Changes are here:
https://github.com/edx/codejail/commit/33758da2609bd72c2c18efc2d4bdb93596523d5e

Bump the edx-ora2 version.
Run make upgrade.

PROD-744

run upgrade to update the dragndrop version.

The 2.3.0 ORA-2 release did not regenerate .min.js
files, so the changes did not appear on Stage or
Production.

EDUCATOR-4635

The ora2 upgrade increases the assignment upload
limit from 10MB to 20MB.

Due to a request from a Master's partner who reports
that the current 10MB limit is not enough for their
degree programs.

EDUCATOR-4635

Update the version.

added the updated dependency for oauth2

added the commit hash instead of branch

minor fix

changes made by make upgrade

This reverts commit 5e8f90ca.

Upgrade the django-wiki version.

Upgrade the django-wiki version.

Push notifications was only ever setup to connect to Parse.com a service
that has been discontinued.  Since we haven't replaced the functionality
for a few years now, remove this dead code.

In cms/templates/js/course_info_update.underscore we're allowing content
to not be escaped because this is by design according to the tests.
Long term there should be a better fix for this but for now this is
intended behavior.