Zabbix

.......... [DEV-2400] added new tests scenarios for Scripts page

Merge in ZBX/zabbix from feature/DEV-2400-5.0 to release/5.0

* commit '8f593d145a604e565e351c6163045763032cb353':
  .......... [DEV-2400] Selenium tests, added fixes regarding code review
  .......... [DEV-2400] Selenium tests, fixed code style and comment
  .......... [DEV-2400] Selenium tests, removed useless checks and tests in 5.0 branch
  .......... [DEV-2400] Selenium tests, added new test scenarios in 5.0 branch