adding id check to the validation

[djarecka]

@satra - I understand that response id also should be the same as name?

perhaps also wasAttributedFrom should be changes?

[satra]

only protocol, activity, and item as these are accessed via the web, hence the name needs to match the id in the jsonld file, not response or any other objects

[djarecka]

ok, changed it.

had to fix id names in some schema in the test/data

[yibeichan]

this PR is related to this issue #43, correct? is this one good to be merged?