The login overview's IP button gained screen-reader text, which is
absolutely positioned. Inside a scroll container that is not positioned,
its containing block lies outside the container, so the span escaped the
container's clipping and every row panned past the edge widened the page:
the admin page scrolled sideways at 390 px. Every overflow-x-auto wrapper
around a table is now relative (the admin sections, the settings token
tables and the Coach result table), and a guard holds that.
