Goal: Reintroduce the category resolver based on feedback from Eng (https://github.com/aerogear/mobile-docs/pull/685).

It makes sense to reintroduce the category resolver to the code as in real-world terms, a developer will realistically have more than 1 table :+1:

See https://github.com/aerogear/mobile-docs/pull/694#discussion_r285528361 for more information.