documentation

Pull request #1832: feature/DEV-3708-7.0-D44. Reverted changes made to "Template changes" page (sub-issue 44).

Merge in WEB/documentation from feature/DEV-3708-7.0-D44 to release/7.0

* commit '0788c6f1eb354e1c7c84ebf6e18a8f00d87ba09c':
  [DEV-3708] updated link (sub-issue 44)
  [DEV-3708] refined note wording, added useful links (sub-issue 44)
  [DEV-3708] moved existing template changes from "Upgrade notes" to "Template changes" (sub-issue 44)
  [DEV-3708] moved new template from "What's new" to "Template changes" (sub-issue 44)
  [DEV-3708] updated page structure (sub-issue 44)
  [DEV-3708] made lines breaks pretty (sub-issue 44)
  [DEV-3708] reverted changes made to "Template changes" page in commit 76c2c50385b (sub-issue 44)