QDoc: Allow the listing of uppercase- and lowercase-named items in list.

-QML basic types are lowercase-named while object types are uppercased.
-reference page for QML types should list both.
-caveat: simple implementation means the uppercase items are listed
 first.

Change-Id: I9092ad0cd9e79c4d3f8b794ac5d68879ce6338a5
Reviewed-by: Martin Smith <martin.smith@digia.com>