Add more support to plural strings translation

Add more support to plural strings translation

refs #8092
Merge branch 'master' into feature/translation-plural-8092
monitoring: Count hosts once in hosts/show.phtml
monitoring: Count unhandled hosts once in hosts/show.phtml
monitoring: Count acknowledged hosts once in hosts/show.phtml
monitoring: Count hosts in downtime once in hosts/show.phtml
monitoring: Count hosts having comments once in hosts/show.phtml
monitoring: Remove multi/* view scripts

They are no longer used.
monitoring: Remove the MultiController

The controller is no longer used.
monitoring: Remove the CommandController

The controller is no longer used.
monitoring: Remove the command/* view scripts

They are no longer used.
monitoring: Count services once in services/show.phtml
monitoring: Count hosts once in services/show.phtml
monitoring: Count unhandled services once in services/show.phtml
monitoring: Count acknowledged services once in services/show.phtml
monitoring: Count services in downtime once in services/show.phtml
monitoring: Count services having comments once in services/show.phtml
Merge branch 'feature/translation-plural-8092'

resolves #8092
monitoring: Remove run.php

The monitoring module still registered the obsolete top bar hook.
monitoring: Remove top bar hook layout

No longer in use.