documentation

Pull request #1151: feature/DEV-2536-7.0-D-API: Updated API intro pages (missing object references, methods; also fixed links, formatting, wording).

Merge in WEB/documentation from feature/DEV-2536-7.0-D-API to release/7.0

* commit '52802f8442ad1d7392dbee59424b25603f00bab4':
  [DEV-2536] Updated API intro pages (object references, methods, links, formatting, wording)