First attempt at creating a data model using compound keys.
Changed DB model to use single keys instead of compound keys.
Added Page table to data diagram.
Added parentId to page so it can be arranged in a hierarchy.
Created a SiteMapPageTree business object that can be used to get a read-only hierarchy of page nodes. Began adding plumbing classes for Entity Framework.
Setup DI configuration in presentation layer. Implemented PageRepository in Data.SqlServer. Setup EF for unit testing.