finished following staffs:
    1. every page have template
    2. every page have controller
following action need to finish today:
    1. the router is not working well, we have to put the index.html#
    into the URL
        eg. localhost:8000/app/index.hmtl#/user/checkouts
        to get the user/checkouts page
    2. the resource is not defined in service yet, all the datas are
    stored in controller, this's not good