Zabbix

.......... [DEV-4627] enabled PHPUnit warnings

Merge in ZBX/zabbix from feature/DEV-4627-7.0 to release/7.0

* commit 'ca5a0e5927d3efd3ac0f5d7c5939cf07f2d354d5':
  .......... [DEV-4627] removed unsued variable; added missing wait
  .......... [DEV-4627] reverted changes; removed unused variable
  .......... [DEV-4627] added fixes regarding code review (part 2)
  .......... [DEV-4627] added fixes regarding code review (part 1)
  .......... [DEV-4627] updated detect function
  .......... [DEV-4627] fixed issues related to detect function
  .......... [DEV-4627] fixed issues related to detect function
  .......... [DEV-4627] fixed callback issue
  .......... [DEV-4627] fixed callback issues; updated element selectors
  .......... [DEV-4627] removed WebDriverBy usage in test cases
  .......... [DEV-4627] removed WebDriverBy usage from testFormAction test
  .......... [DEV-4627] fixed coding style
  .......... [DEV-4627] added description
  .......... [DEV-4627] updated PHPUnit exception class
  .......... [DEV-4627] updated phpunit class
  .......... [DEV-4627] enabled PHPUNIT_REPORT_WARNINGS (release/7.0)