Separate module and entity names.

Hi,

The module uses the same name for the module and the entity. It's a common way to do, but it is not always a good idea and can be confusing. For example, if I want to create an entity 'term' or 'vocabulary' for the module 'taxonomy', I can't make a simple search and replace on the model module.

That's why I made the below patch, where the module name remains "model", but the entity name is changed to "modelentity".

If the user wants to use the same name, he can simply rename "model" and "modelentity" with the same name. If he prefers to use two different names, he can too.

Sincerely,

Daniel Berthereau
Infodoc & Knowledge management