#2 MVC "M" Part

[Eric MSP Veith]

Coeur is a MVC-based design, but the model part is missing as of now. There do some examples and thoughts exist, but nothing more. The Model packages shall reside in the Coeur::Model namespace. Wanted features:

* DB configuration should be easy
* We use DBI
* Make sure only 1 connection to the DB is opened per HTTP request, and made available to all script that need it
* Objects that represent table rows should have their attributes as "lvalue" subs
* The model should make assertions on the data attributes possible, e. g. regexp based, only integers, and so on