Support all fact models in database about anki-android HOT 4 CLOSED

Thank you!

A tool like "SQLite Database Browser" is very useful to understand how a ".anki" file
is made. I think I remember that all cards have a question and answers, but with sort
of delimiters, and are linked to a model defined in another table. I really don't
remember well, though.

You will probably create a test deck with several kinds of models. If you create such
a file, can you please commit it in the project? It will be helpful for testers.

Cheers!
Nicolas

Sure; no problem.

I believe this one is done, for both review and edition. It works for complex self-
made models.
Marking as fixed in dev, please correct me if I am wrong!