Alert Rules- Allow disabling of rules

Allow the admin the ability to simply disable/re-enable selected alert rules. This would allow us to assess the impact and saves us from having to remove/re-add the rule or reassign the priority to a high number. We can then check the impact by using \'\'Show alert routing\'\'. We have close to 100 rules (and growing) and this can help determine correct rule placement/settings, especially the way the rules are currently evaluated by Lomo. Another thing that would be helpful is adding a comment field for each rule. thanks.