Add "settings" link.
Add "settings" link.

This is just a "Settings" text-link at top left, next to the FOLIO
branding, that transitions to /settings. It is NOT based on Filip's UX
designs, it's just so I can run the patron-group CRUDding.

folio-org/stripes-core,folio-org/stripes-core,folio-org/stripes-core