ISIS-964: unified UI hints in @ClassLayout, @PropertyLayout, @CollectionLayout, @ActionLayout, @ParameterLayout and corresponding support in .layout.json for properties, collections and actions.
ISIS-964: updating todoapp and simpleapp; debugging the new layout hints
ISIS-964: more debugging... getting there

The todoapp now runs again, at least
ISIS-964: okay, just about there I think
ISIS-964: recreating simpleapp archetype
ISIS-964: recreating todoapp archetype
ISIS-964: fix for todoapp integ test (already in the archetype)
ISIS-964: fix for paging with new XxxLayout stuff