Big improvements on the new device wizard:
- Removing retry, since now lockfile management is much better.
- Improving bluetooth: now automatically scanning ALL services, and showing user a list of good devices only. Also scanning automatically starts if bluetooth is enabled. Invalid services will be removed from config file.
- Typo fixes.

Also better serial port management, fixing timeouts, and closing automatically device after an error, instead of making the user wait wondering for what's happening.