Change registration to be the same as the api docs

lib/Pear/LocalLoop/Schema/Result/Customer.pm

@@ -13,7 +13,7 @@ __PACKAGE__->add_columns(
     is_auto_increment => 1,
     is_nullable => 0,
   },
-  "username" => {
+  "name" => {
     data_type => "varchar",
     size => 255,
     is_nullable => 0,
@@ -32,8 +32,6 @@ __PACKAGE__->add_columns(
 
 __PACKAGE__->set_primary_key("id");
 
-__PACKAGE__->add_unique_constraint(["username"]);
-
 __PACKAGE__->belongs_to(
   "age_range",
   "Pear::LocalLoop::Schema::Result::AgeRange",