Revolutionary changes in this commit. Expand for details.
- Added FULL cImpT/Tox (Compact Implication Transfer over Tox Protocol) support
  - Type ">" before your message and Poison will automatically and intelligently
    route it using cImpT/Tox.
- Fixed display of actions (name of actor is now included)
  - Reminder: press Shift+Return to send the current message
    as an action.