Hook up Fetch to the Pixi renderer.

[ThomasDavisA]

Ensure the fetch code that has been brought over to the Pixi client works as intended. This means to make the kobolds properly render and derender whenever the fetch is called and to update the internal list on the Pixi renderer correctly.

[ThomasDavisA]

I've run into a small issue, where upon calling the REMOVE_USER event for the Fetchstore, that there is no userId being sent for me to delete.