shells with a new single/unified JS module (email_sec.js):
- New (U)n-read mail read command ('A' is now for sending file attachments)
- I didn't update to the renegade shell since it has a custom menu file
- This module will work with older Synchronet builds, without netmail file
  attachments
- The old Baja code still works, however... less Baja = rounder Earth