Add normalise_urn() and normalise_tel_number() to contacts utils
Add normalise_urn() and normalise_tel_number() to contacts utils

praekelt/casepro,rapidpro/casepro,rapidpro/casepro,rapidpro/casepro,xkmato/casepro,praekelt/casepro,praekelt/casepro,xkmato/casepro