Add PageConfigModule

[davidbrochart]

@trungleduc The test in this PR shows how to use the PageConfig. You can register a (async) hook that will be called with the page config, and this hook can change the config.

[trungleduc]

Can you give me an example of how I can replace this PageConfig module?

[davidbrochart]

You will have to get the page config from your module, and register your hook:

class MyModule(Module):
    async def prepare(self):
        page_config = await self.get(PageConfig)

        async def my_hook(config):
            config["foo"] = "bar"

        page_config.register(my_hook)

[trungleduc]

great! thank you verymuch

[trungleduc]

@davidbrochart will i have access to the request object in the page config hook?

[davidbrochart]

You should.