GET /system/jira-config was admin-only, so non-admin users hit a 403
and the frontend silently fell back to a hardcoded jira.atlassian.com
base URL when building /browse/{key} links. Opened it to any
authenticated user (still no secrets returned).
Also drops the redundant 'security-test' Jira label, and adds a
page-size selector (10/25/50/100) and a 'no existing test yet' filter
to the Test Catalog.
kitos
f32f636f05