Zabbix

.......... [DEV-3706] added checks for empty multiselects, tables and pages

Merge in ZBX/zabbix from feature/DEV-3706-6.5 to master

* commit 'a74b0595a69223c778e7424e6d74b82f4b7efc50': (34 commits)
  .......... [DEV-3706] removed flag
  .......... [DEV-3706] fixed after review vol.4
  .......... [DEV-3706] changed tests ordering
  .......... [DEV-3706] fixed after review vol.3
  .......... [DEV-3706] fixed formatting
  .......... [DEV-3706] renamed test names
  .......... [DEV-3706] experiment with testo ordering
  .......... [DEV-3706] fixed formatting
  .......... [DEV-3706] fixed after review vol.2
  .......... [DEV-3706] fixed after review vol.1
  .......... [DEV-3706] refacrtored multiselects checking vol.3
  .......... [DEV-3706] refacrtored multiselects checking vol.2
  .......... [DEV-3706] refacrtored multiselects checking vol.1
  .......... [DEV-3706] fixed after review vol.2
  .......... [DEV-3706] removed todo and commented check
  .......... [DEV-3706] stabilized test scenario
  .......... [DEV-3706] fixed code styling
  .......... [DEV-3706] fixed filter tab
  .......... [DEV-3706] fixed filter instability
  .......... [DEV-3706] added actions form overlays check
  ...

(cherry picked from commit 2457f93190e8523b63b4ed38745f66bb3257456c)