Updated api def and version bump

Thanks @ilijabojanovic, this PR resolves the JS test failures.

Regarding the failing Dashboard user test:

  #  failure               detail

 1.  AssertionError        Response contains user data
                           expected 'keira_ebert95@example.org' to equal 'Keira_Ebert95@example.org'
                           at assertion:1 in test-script
                           inside "General Tests / Dashboard API / Users / Get a User"

Do we now set email addresses to lower case when they are created in Tyk?

TykTechnologies / tyk-demo

Updated api def and version bump #180