Zabbix

.......... [DEV-4144] created Problem Hosts widget Selenium tests

* commit '4c82695ee577cb356b0a8f7acbfc68e3d71eeedd':
  .......... [DEV-4144] added wait for dashboard element to eliminate severe browser error
  .......... [DEV-4144] fixed super small coding style issues
  .......... [DEV-4144] implemented fixes from code review
  .......... [DEV-4144] added tests for chevron menus in problem hosts widget form
  .......... [DEV-4144] applied fixes after code review
  .......... [DEV-4144] applied fixes after code review

(cherry picked from commit ef4c2c6b8bb23682d36c3902bebc7eabbed330ad)