Allow webservice mahara_submission_release_submitted_view to also do archiving on submission release

[Robert Lyon]

Currently we can old do release() method and not the pendingrelease() method that allows archiving on the mahara side

[Kristina Hoeppner (kris-hoeppner)]

https://reviews.mahara.org/#/c/11144/

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/11144
Committed: https://git.mahara.org/mahara/mahara/commit/814bc5f62657622195b3e3d2618997db074518f0
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 814bc5f62657622195b3e3d2618997db074518f0
Author: Robert Lyon <email address hidden>
Date: Mon Aug 17 14:31:23 2020 +1200

Bug 1891850: Allow webservice to archive submission on release

This patch adds 2 flags
- archiveonrelease: Set the submission to be archived on release
- externalid: An id relating to externalhost to connect archive with

This patch fixes:
- Issue with archived submissions page where it was incorrectly showing
truncating archive id value (in Postgres)
- The archived_submissions table was not letting entries with group id
being null

Change-Id: Ie29ea4162a822bea6730e57f7f4348cd55865004
Signed-off-by: Robert Lyon <email address hidden>