user: allow to repeat username
user: allow to repeat username

coopdevs/timeoverflow,coopdevs/timeoverflow,d2bit/timeoverflow,d2bit/timeoverflow,jordipujollarena/timeoverflow,d2bit/timeoverflow,jordipujollarena/timeoverflow,jordipujollarena/timeoverflow,coopdevs/timeoverflow,coopdevs/timeoverflow,d2bit/timeoverflow