Edit an existing scheduled outage from node's page doesn't work

A customer has reported an issue related with the scheduled outage management on 1.12.

If you go to a node's page, and click on "Scheduled Outage", it will show you the page for "creating" an outage, even if there is already a definition on poll-outages.xml for that node.

In 1.12, the UI allows you to add a second entry with the same name on poll-outages.xml which is not correct, when you save an entry the second time.

In 14, the UI is going to override the existing entry with the same name if exist (which is the expected behavior).

But, if there is an existing one, the editoutage.jsp should be smart enough to treat a "create" request as a "edit" request if there is already an entry on poll-outages.xml.