Zabbix

..F....... [ZBX-19583] unified date format across datepickers

Merge in ZBX/zabbix from feature/ZBX-19583-6.0 to release/6.0

* commit 'aee2b261169543db8c3562e54e5fb64e4269e6cf':
  .......... [ZBX-19583] updated unit tests
  ..F....... [ZBX-19583] added uint64 input validation rule
  ..F....... [ZBX-19583] fixed typos
  ..F....... [ZBX-19583] fixed undefined index errors in forged requests
  ..F....... [ZBX-19583] fixed absolute time parser
  .......... [ZBX-19583] added new test cases for CAbsoluteTimeParser class
  .......... [ZBX-19583] added new test cases for CValidationRule class
  ..F....... [ZBX-19583] unified date format across datepickers

(cherry picked from commit 6519662e85d65e77fbd74360837610241c9d6630)