Allow plain html markup inside <t:datalist>

Currently, a <t:datalist> only allows JSF components in its body. This makes it very difficult to
render a <table> like:

<t:datalist>
<tr>
<td><h:outputText.../></td>
<td><h:outputText.../></td>
<td><h:outputText.../></td>
</tr>
</t:datalist>

For a <table> one could use the datatable, but one may not want to have such a heavy weight
component or may need to output a <dl>.