Ears 1.7.191

Fixes

• "Delete my registration" now works. The confirmation was attached to the
  wrong settings page, so the button did nothing at all.
• The Licence section lines up with the rest of the General tab, and shows the
  address and the expiry together rather than on two ragged rows.
• Removed the "Email me occasionally about Ears" tick box. It set something the
  app never sent anywhere, so it promised a choice that had no effect.