documentation

Pull request #2099: feature/ZBXNEXT-9452-7.2-D. removed support for deprecated properties/parameters/methods.

Merge in WEB/documentation from feature/ZBXNEXT-9452-7.2-D to release/7.2

* commit '91846b398429178974f21f2e118121f8dab3531b':
  [ZBXNEXT-9452] removed support for deprecated properties/parameters/methods (added note on Apache and Authorization header)
  [ZBXNEXT-9452] removed support for deprecated properties/parameters/methods (emphasized `auth` property drop)
  [ZBXNEXT-9452] removed support for deprecated properties/parameters/methods