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.

Update email messages associated with Proctoring states

See PROD-1073 for details.
We are updating the email messages with different contact_us links on this version.

Fix bug on edx-proctoring InstructorDashboardView

In this release we fixed a problem where the InstructorDashboardView would not return the right dashboard if the last exam setup for the course is not proctoring enabled.

Match npm and pypi versions.

Merge pull request #632 from edx/feanil/bump_version

Bump both versions to match.