documentation

Pull request #446: ZBXNEXT-5535 User-friendlier functionality of Autosuggest

Merge in WEB/documentation from feature/ZBXNEXT-5535-6.4-D to release/6.4

* commit '0c4313b19c009c4470caaf1f408bf6c5916f6f4e':
  ZBXNEXT-5535 Edited a line in Graph.
  ZBXNEXT-5535 Added a link in Whatsnew page.
  ZBXNEXT-5535 Edited the table on Graph page.
  ZBXNEXT-5535 Edited Whatsnew and Graph pages.
  ZBXNEXT-5535 Edited Whatsnew and Graph pages.
  ZBXNEXT-5553 Partially edited Graph page.
  ZBXNEXT-5535 Edited image in Graph page.
  ZBXNEXT-5535 Edited images in Graph page.
  ZBXNEXT-5535 Edited Whatsnew page.
  ZBXNEXT-5535 Edited Whatsnew and Graph pages.
  ZBXNEXT-5535 Edited Whatsnew and Graph pages.
  ZBXNEXT-Partially edited Whatsnew and Graph pages.
  ZBXNEXT-5535 Edited Whatsnew and Graph pages.
  ZBXNEXT-5535 Updated Whatsnew and Graph pages.