Test imports of contrib projects with the OpenProject Jira migrator

Import a few contrib projects from jira.xwiki.org and compare them with Jira, using the checklist on the design page (section "Checks for each import"): https://design.xwiki.org/xwiki/bin/view/Proposal/JiraToOpenProjectMigration

Check that an import account outside the security-level groups doesn't import confidential issues or restricted comments.

First import done on 2026-10-16 (a 10-issue project).