Zabbix

..F....... [ZBXNEXT-8165] added possibility to specify decimal places in Top hosts widget

Merge in ZBX/zabbix from feature/ZBXNEXT-8165-6.3-3 to master

* commit '84b9f5e0aa2bf806d5b04bfe6c1ce3fa4d7af75a':
  ..F....... [ZBXNEXT-8165] fixed zero value formatting
  ..F....... [ZBXNEXT-8165] fixed autocorrection to zero of "Decimal places" field in "Item value" widget
  ..F....... [ZBXNEXT-8165] removed unnecessary hint from "Decimal places" field in column editor of "Top hosts" widget
  ..F....... [ZBXNEXT-8165] fixed type and size of "Decimal places" field in column editor of "Top hosts" widget
  ..F....... [ZBXNEXT-8165] fixed displaying zero number without decimal places
  .......... [ZBXNEXT-8165] fixed test for Top host widget update
  ....I..... [ZBXNEXT-8165] fixed database schema
  ..F....... [ZBXNEXT-8165] added possibility to specify decimal places in Top hosts widget
  ..F....... [ZBX-22222] fixed change indicator to display up/down arrows for non-mapped values
  ..F....... [ZBX-22222] fixed undefined index with item units not selected when needed
  ..F....... [ZBX-22222] fixed displaying change indicator for string items when no previous value existed
  ..F....... [ZBX-22222] fixed number formatting according to the locale
  ..F....... [ZBX-22222] fixed coding style
  ..F....... [ZBX-22222] fixed incorrect state of change indicator #2
  .......... [ZBX-22222] fixed spelling mistake
  ..F....... [ZBX-22222] updated unit tests for convertUnits function
  ..F....... [ZBX-22222] fixed formatFloat rounding, updated unit tests
  ..F....... [ZBX-22222] fixed applying item value maps on aleady converted values