documentation

Pull request #1712: feature/ZBXNEXT-9096-7.0-D: Removed flags and updated What's new.

Merge in WEB/documentation from feature/ZBXNEXT-9096-7.0-D to release/7.0

* commit '6778f13f02108272072d18068e5eda2f9993cf8f':
  [ZBXNEXT-9096] Updated wording
  [ZBXNEXT-9096] Updated What's new
  [ZBXNEXT-9096] Removed flags (no longer experimental)