documentation

Pull request #1742: feature/ZBXNEXT-8683-7.0-D-API. Added honeycomb widget (API).

Merge in WEB/documentation from feature/ZBXNEXT-8683-7.0-D-API to release/7.0

* commit '6d8ceeed4fba23866214fd360bffead7e395780c':
  [ZBXNEXT-8683] refined Background color parameter placement in table
  [ZBXNEXT-8683] split primary/secondary label into two sections
  [ZBXNEXT-8683] added honeycomb widget (API)