crud-reorg: making mechanics page
crud-reorg: fixing table of contents
crud-reorg: architecture renames
crud-reorg: table of contents editing
some edits to create insert save
crud-reorg: update examples
crud intro maybe
crud-reorg: adding generated composite reference tables for crud methods as an initial example
crud-reorg: moving introduction into concepts
crud-reorg breakign out read pref ref & some reorganizing