[PianoNic]

Summary

• The official card fills the whole screen: status and navigation bars are hidden while the page is open (immersive) and come back on leaving, and the page has no title or back row any more.
• A small close button sits in the top corner, clear of the camera cutout. The date, the refresh button (which replaces pull to refresh, since the card takes every drag) and a failed refresh fit in one line at the bottom.
• The card still scrolls when it is taller than the screen; brightness, the screen lock and Android back work as before. The self-built card and the error states are unchanged.

Closes #612