Sort object props/params by default, hoist required ones

[brotheroftux]

Main changes:

• Lexicographic sorting for endpoint params/object schema props is now ON by default
• Required params/object schema props are hoisted to the top by default

Misc:

• Changed the test config a bit — I think it makes sense to treat __tests__ as a folder for all integration tests, and unit tests should be stored close to the code they are testing (see presentationUtils folder structure)