ORM: Rename to RelationalData to SideLoadedData

[509dave16]

• DataManager is what you get back from any of the RelationalDB methods. Should really rename it to just be DB or SideLoadedDataDB. Not sure what is best for a name.
• DataManager holds the Source Data and Source Query along with the SideLoadedData
• Model and Entity Methods will be moved to the SideLoadedDataManager. They can still be used by the Model, Entity, and Collection. They just won't reside in them anymore
• Any addition, removal, or iteration should all be directed through the DataManager one way or another. By doing this we can track all changes. So that

[509dave16]

Caching for Models Type -> ID -> Model Caching for Collections Type -> ID -> Relations -> Collection

Inverse relationships

• If we create a new Author and then add existing and new books to it.
• Each new book should be created
• Each book should be added to the Author's books
• Each book should have the Author added to them

Don't have to specify Author ID or new Books IDs