documentation

Pull request #3779: Feature/DEV-4467 7.5 D s59

Merge in WEB/documentation from feature/DEV-4467-7.5-D-s59 to release/8.0

* commit 'd7c1a7b1376ccdcd04dff8d87136aa664dc004b4':
  [DEV-4467] updated formatting and wording for widgets (sub-issue 59)
  [DEV-4467] updated widget download description (sub-issue 59)