NEW FieldGroup_DefaultFieldHolder template

As a replacement for the FieldGroup->subfieldParam
setting available in 2.4. Usage through FieldGroup->setTemplate().

templates/forms/FieldGroup_DefaultFieldHolder.ss

@@ -0,0 +1,7 @@
+<div class="<% if extraClass %>$extraClass<% else %>fieldgroup<% end_if %><% if Zebra %> fieldgroup-zebra<% end_if %>" <% if ID %>id="$ID"<% end_if %>>
+	<% loop FieldList %>
+		<div class="fieldgroup-field $FirstLast $EvenOdd">
+			$FieldHolder
+		</div>
+	<% end_loop %>
+</div>