documentation

Pull request #340: Feature/ZBXNEXT-7830 6.4 D1

Merge in WEB/documentation from feature/ZBXNEXT-7830-6.4-D1 to release/6.4

* commit '795bf2071ecdf7769c2776ec17b6528f4d6d7641': (88 commits)
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  Fixing translation block comments
  fixing translation block comments
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  [ZBXNEXT-7830] page update
  ...