Add navigation to the resource created view
Add navigation to the (resources|contexts) (new) views

* very primitive, but it works ...
Rendering resource_with_contexts (instead of resource)

* fact => fact_with_context[:fact]
* WIP: context summary not yet implemented
Add presenters dir, fact_with_context, resource_with_contexts
FactWithContext has #fact and #context_summary
Implement ResourceWithContexts
Add arg tests for FactWithContext.new
Use ResourceWithContexts for all view code