Update version to v3.4.2
Fix issue with fetching anonymous user ID setting in the upgrade `Fixes` helper.
Fix issue with related ticket properties being used instead of the ticket being viewed.
When fixing unowned database items, also check for the user ID of `0`.
Merge branch '3.4'

* 3.4:
When fixing unowned database items, also check for the user ID of `0`.
Fix issue with related ticket properties being used instead of the
ticket being viewed.
Fix issue with fetching anonymous user ID setting in the upgrade
`Fixes` helper.
Update version to v3.4.2

Conflicts:
	vendor/traq/version.php