Remove need for separate ReSpec clone for Arazzo

[ralfhandl]

Use the same OAI fork of ReSpec as the OpenAPI specification and set section headline for "abstract" in the HTML document instead of tweaking the default in the respec-xxx.js

[ralfhandl]

@frankkilcommins Please review

[frankkilcommins]

@ralfhandl can you share the related OpenAPI-Specification/gh-pages commit?

[ralfhandl]

Not yet merged, PR OAI/OpenAPI-Specification#3943 is still waiting for @darrelmiller's approval.

Easiest way to test this:

• check out this PR

• bash scripts/md2html/build.sh

• copy https://github.com/OAI/OpenAPI-Specification/blob/gh-pages/js/respec-oai.js to deploy/js and make sure it is the only file there

• verify that your local file structure is
  

• open deploy/arazzo/latest.html in browser

• verify that the first headline after the Copyright line is "What is the Arazzo Specification?"

No need for a modified respec-arazzo.js.

[frankkilcommins]

LGTM - we'll merge after the OAI/OpenAPI-Specification#3943 is merged.

[ralfhandl]

OAS is moving to the latest unmodified ReSpec with static HTML pages that do not need a respec-*.js.

See OAI/OpenAPI-Specification#3944