------------------
- Simplify patch of DynamicType pre-traversal hook and actually make it work
with Archetypes.
[buchi]
- Render errors as JSON.
[jone]
- Add support for named services which allows registering services like
``GET /Plone/search`` or ``GET /Plone/doc1/versions/1`` using a 'name' attribute.
[jone, lukasgraf, buchi]
- Remove "layer" from service directive for now,
because it is not yet implemented properly.
[jone]