(ui) hook in mobile form improvement, mark table with "opnsense_standard_table_form" class to use it.

PR: https://forum.opnsense.org/index.php?topic=3004

clone button clone client not rule

Not really satisfied with the HA split but let's just say it's a
work in progress...

this pull request will fix the comment as suggested in #949

While there, improve the consistency of the cron descriptions
and service messages.

We'll go the long way here, bumping the values first before making
them configurable in the next iteration.

Suggested by: @fabianfrz