user/group.go
func checkGroup(group []string, value string) bool {
	for _, v := range group {
		if v == value {
			return true
		}
	}
	return false
}
func checkGroup(group []string, value string) bool {
	for _, v := range group {
		if v == value {
			return true
		}
	}
	return false
}
// == Utility
//
// checkGroup indicates if a value is into a group.