Live Data triggers JavaScript events on a detached DOM element

As I commented on https://jira.xwiki.org/browse/XWIKI-19300?focusedCommentId=111095&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-111095 the Live Data is currently triggering a couple of JavaScript events but it does this on the DOM element that is replaced by the Vue.js component. So there's no easy way to catch these events:

• that element is not anymore in the DOM, so the only way to get it if before the live data is loaded
• the events can't propagate up in the DOM if the element is detached

This shows that there is a serious flaw in the way the live data is loaded. We should:

• either not replace the element (i.e. make it wrap the Vue.js component)
• or trigger the events on the root element on the Vue.js component so that they can be listen to