documentation

Pull request #1007: feature/ZBXNEXT-8086-7.0-D-API: Ability to use all widgets on template dashboards (updates to API).

Merge in WEB/documentation from feature/ZBXNEXT-8086-7.0-D-API to release/7.0

* commit 'd3fb575306a6a61eb0f63ecba16169463245468c':
  [ZBXNEXT-8086] "Sort entries by" parameter values (2, 14) not available when configuring the widget on a template dashboard
  [ZBXNEXT-8086] Removed type meaning in Changelog; updated formatting in some *Tags* rows
  [ZBXNEXT-8086] Ability to use all widgets on template dashboards (updates to API)