More options on Ctrl+C, Small fix for bully

When interrupting an attack, users can choose to:

1. continue attacking the same target with remaining attacks,
2. skip to the next target, or
3. exit Wifite.

Other small changes:

• Wifite passes --force into Bully to bypass warnings
• Wifite detects when --wps-only and --pmkid are both specified, and exits with an error message.