Zabbix

.......... [DEV-1024] added new multiline input element, added scenarios for JavaScript preprocessing step

* commit '8227734f0eddd8e04d7ef7ace698a10c58cbd7c3':
  .......... [DEV-1024] fixed code styling
  .......... [DEV-1024] fixed code styling
  .......... [DEV-1024] fixed code styling in tests for review
  .......... [DEV-1024] fixed for review: refactored PreprocessingTrait and CastableTrait, added onNotSupportedMethod to CElement
  .......... [DEV-1024] added scenarios for JavaScript preprocessing step
  .......... [DEV-1024] added new multiline input element, ajusted framework and trait for working with multiline input