Check strings before use. Don't trust printf to handle this.
Improve navigation on error.
Add possibilty to power down when a error happens (e.g. DNS error).
Fixed problem that it wasn't possible to get back to main menu when a DNS
error happened.
Use TRIANGLE instead of CIRCLE for deleting acounts and playlists.
Updated doc.
Improve main menu
Blink selected entry.
Scroll selected entry if it is too long for the screen.