CtRt inserter: rework on registers + insert domain
CtRt inserter: rework on registers + insert domain

Allow to enable only masquerading on invites.

BelledonneCommunications/flexisip,biddyweb/flexisip,gale320/flexisip,biddyweb/flexisip,BelledonneCommunications/flexisip,gale320/flexisip,biddyweb/flexisip,gale320/flexisip,gale320/flexisip,BelledonneCommunications/flexisip,biddyweb/flexisip,BelledonneCommunications/flexisip