monitoring: Fix that sorting a data view is not possible if its sort
rules are empty
monitoring: Fix some of `DataView's PHPDoc
Fix the duplicate entries in monitoring list shows

refs #7057
refs #7344
fixes #7057
Merge branch 'master' into bugfix/monitoring-list-dup-entries-7057
Merge branch 'bugfix/monitoring-list-dup-entries-7057'

refs #7057
refs #7344