Add hooks around manipulated resources

[paulRbr]

What

We need to be able to control the resources before and after the action done in each API route.

Why

Add ACL on your API routes

How

I propose to implement kind of hooks you could define in your controller

[paulRbr]

Part of this is done in limit_{action}_for additional methods to write in your model's controller:

• https://github.com/squareteam/yodatra/blob/master/lib/yodatra/models_controller.rb#L191

Todo

• review
• validate
• documentation