documentation

Pull request #1256: feature/DEV-2606-7.0-D-API: Added `token` example and description of params returned by method.

Merge in WEB/documentation from feature/DEV-2606-7.0-D-API to release/7.0

* commit 'ee30ca314256822301efff50d39fed5adef1a1ce':
  [DEV-2606] Removed note; updated links; replaced "session ID" with "authentication token"
  [DEV-2606] Removed note; refined wording and formatting
  [DEV-2606] Added description of additional params returned by `user.checkAuthentication`
  [DEV-2606] Refined `sessionid` example; added `token` example