Minor When using the same message banner on several components of the page, they need to be isolated correctly so that JSF component ids are not dupplicated (see fixes for NXP-6227).
However, when several messages appear, the javascript code that hides the message after a few seconds only has an effect on the first one found.
Improving the javascript code could be enough, but it would be better to set a unique div id when including the message banner template, that would default to an empty string.
