Fatal error in threaded comments sortorder upgrade script

[Aaron Wells]

The upgrade script for Bug 1499122 causes some fatal errors during upgrade.

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/5571

[Aaron Wells (u-aaronw)]

patch for 15.10_STABLE: https://reviews.mahara.org/#/c/5568/

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/5568
Committed: https://git.nzoss.org.nz/mahara/mahara/commit/acfa725937c99b586a0fc31fc3e5523f6549b647
Submitter: Robert Lyon (<email address hidden>)
Branch: 15.10_STABLE

commit acfa725937c99b586a0fc31fc3e5523f6549b647
Author: Son Nguyen <email address hidden>
Date: Wed Oct 21 12:23:15 2015 +1300

Fix sorting threaded comments. Bug 1499122

- Add new column 'threadedposition' to table artefact_comment_comment
- Update the column for existing comments
- Calculate the position for new comments
- Display threaded commented using this for correct order
- Add a behat test
- Fix problems in upgrade script (Bug 1508301)

Change-Id: I607f26fccccee8f761754a41a21c6f58dd74cfb6

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/5571
Committed: https://git.nzoss.org.nz/mahara/mahara/commit/7519e33169da85457e01fdc0d0462430ffbbe287
Submitter: Aaron Wells (<email address hidden>)
Branch: master

commit 7519e33169da85457e01fdc0d0462430ffbbe287
Author: Aaron Wells <email address hidden>
Date: Wed Oct 21 17:19:31 2015 +1300

Bug 1508301: Fixing errors in threaded comment upgrade script.

behatnotneeded

Change-Id: I8dab454d81618c2b9aff92f2228ee16b5894ae53