extend object dispatch to use HTTP verb info

[mramm]

I think we should provide a way to specify which method is called based on HTTP verb type.

We could do this with special method names

def POST_employee(self,...) 
    pass

def GET_employee(self,....)
    pass

or we could ask people to define an employee object which subclasses Resource and defines Get, Post, Put, and whatever other http verbs are required.

But either way, we need to make it easy and somewhat obvious call differnt methods on a resource based on the HTTP verb used in the request.

[jorge.vargas]

I like the idea, I just don't like the approach. How about this? I think I got the inspiration from how appengine does it.

   @expose('some/template/file')
    def employee(self,...):
        def get():
            pass
        def post():
            pass

And you could also do

    def POST_employee(self,...) 
        pass

    def GET_employee(self,....)
        pass

    @expose('some/template/file')
    def employee(self,...):
        get = GET_employee
        post = POST_employee

last but not least we could just provide a check so you can do

    @expose()
    def employee(self):
        if tg.is_get():
            pass

[percious]

See ticket #1925 . This is closest to the solution we will go with.