Stablish resources exceptions

The exceptions in raw materials are used to stop the develop of a raw material in a specific village.

When the program decides to develop a raw material, the exceptions will be consulted. If a village has an exception which coincides with the desired development, the program won't make this improvement, and will search another thing to do.

The necessary parameter for configuration are:

Village (aldea): town in which we want to make the exception of.

Raw Materials (Materias): raw materials which we don't want develop.