Initial buildout of References components

[cooperlarson]

• key implements
  • references collection to support maintainable and scalable management of growing references collection
    • top-level database component: much safer way to manage data than in a singular component.
  • each component has its own page 'slug' and the component is shared between individual page and blocks feature
  • blocks feature is completely managed, just install on page and configure the limited settings if you wish, the default settings are good though.