Fix link of header brand logo text

The site title in the nav bar is a non-clickable link due to wrong z-indexes

added part::frontend type::bug labels

created merge request !582 (merged) to address this issue

mentioned in merge request !582 (merged)

changed title from Fix z-index of header brand logo text to Fix link of header brand logo text

closed with merge request !582 (merged)

mentioned in commit 220887cd

mentioned in issue #520 (closed)