to_ng_init should support nil value.
add angular init name and phone variable for user.
save user name and phone before create order.
add feature test.
fixed rspec error.
validate order at server.
merge master.
Merge pull request #494 from saberma/saberma-feature/462-show-user-info-form-before-create-order

创建订单前提示用户完善信息 #462