(+) Force group_ prefix in C++
(+) Force group_ prefix in C++

TODO:
Secure function that changes label to drop any request to prefix a label with group_
This way we:
Box in possible vulnerabilities stealing priv keys (even tho we have QMessageBox in place)
Prevent n00bs from making addresses with group_ in front of it by accident.

shadowproject/shadow,shadowproject/shadow,shadowproject/shadow,shadowproject/shadow,shadowproject/shadow,shadowproject/shadow