Add additional logging after proctored exam registration

• Added additional logging after proctored exam registration in order to determine source of null external_ids for proctored exam attempts.

add additional logging to error messsage

add external_id to error message (#659)

* add external_id to error message

Add local PII retirement code

Exposes new endpoint at edx_proctoring/v1/retire_user/<user_id>/ to:

• Clear user names and IP addresses logged with proctored exam attempts
• Clear values for proctored exam student allowances

2.3.0: allow for more time for the proctortrack app to restart after crash

JIRA:CR-1597

v2.2.8

Don't allow transitions from ready_to_submit -> error.

Update the email message template again to help support Course Teams on Proctoring

Update the email message again so we can support Course Team for either Proctortrack and PSI.

Revert the email message change back in v2.2.1

The email message change back in v2.2.1 was made for all proctoring services. That was not desired. So, revert this first. Then we will make the update in a later version

Switch From jsonfield to jsonfield2

jsonfield package used by edx is currently unmaintained and has only been tested against Django versions through 1.11, so replaced with jsonfield2 which supports Django 1.11 through 2.2.

2.2.4 Release

Merge pull request #642 from edx/waheed/skip-pypi-deploy

Skip Pypi deploy if already exists.

Fixing warnrings

Added app name to fixing warnings in edx-platform.