The existing "administration homepage" (see below) will be deleted.
It will be replaced by tabs. See mockup on figma:
https://www.figma.com/proto/RaBL0FL199pbWkh7TUJXIrAP/Trackers-service-flow?node-id=39%3A492&scaling=scale-down&redirected=1
The code of the "grey boxes" page is removed. There is no "fallback mode", no feature flag.
When tracker administrator clicks on "Administration", they reach the "Fields > Manage Fields" tab.
The "General" page is renamed, it no longer is the first tab.
Timetracking / encrypted fields tabs are added to the right (with an event).
The "Pulse" animation on tabs will be done in story #13573 See at a glance which parts need configuration.
Depending on the order of completion of another story, there is a Hierarchy tab (not shown in the mockup).
The breadcrumbs don't change, it is done in story #13576 Navigate with breadcrumb.