Add OntModelCache to the top of the stack of RDF data structures.
Add DataStructuresProvider to the bottom of the stack.
Redesign ModelAccess method signatures.
Create the ShowSources page.
Remove RequestModelsPrep, except for setting the Collator.
Reduce the complexity of ContentModelsSetup and ConfigurationModelsSetup.
VIVO-225 VIVO-819 VIVO-820 VIVO-821 VIVO-823 VIVO-832
By making it a singleton, we do need an explicit Setup operation. However, it means that we can refer to the settings in client code that doesn’t have access to a request or to the ServletContext.
Other refactorings to simplify the logic or make it more scalable.
