Implement File Save/Load

[migueldeicaza]

Implement File Save/Load

[KMullins-Xam]

This feature took way longer to implement than I had initially envisioned because I had to lay in all of the changes for linked variables and code generation before I could add this feature since the object structures kept changing (and the file structure would have as well).

I have implemented a custom ORM (TextBase) inside of the app so all the developer has to do is decorate the classes to save and load with custom attributes and the ORM will handle the rest. It was written to be tolerant of changes to file structure between app versions.