We'll see if we can get this into 2.2-M2

Would be nice to have this asap since I don't think it will do any damage to existing applications.
The following changes did the trick for me:

val title : String = (styles \\ noticeType.titleTag).filter(_.prefix == "lift").map(_.text.trim).headOption getOrElse ""
changed to:
val title : NodeSeq = (styles \\ noticeType.titleTag).filter(_.prefix == "lift").flatMap(_.child)

case class AjaxMessageMeta(title: String, cssClasses: Box[String])
changed to:
case class AjaxMessageMeta(title: NodeSeq, cssClasses: Box[String])

On RB:

http://reviewboard.liftweb.net/r/563/

(In revision:3dc0f94b578fffde40f7293c0039953bb7069e8f) Notice titles can now be NodeSeqs

Closes #711

Branch: master