v1.6.3

Update 1.6.3:

* Discovered devices' table now fits its whole area.
* If user clicks on add button with nothing selected, a message box will
  be shown indicating they have to select at least one device from the
  list.
* When adding new Bluetooth devices to the trusted list, check if
  they're paired, and if they aren't, ask user if they want to pair it.
  Pairing them on possitive answer.