Removed the create/new/destroy methods from several models.

From now on those operations will take place directly in the database, this
removes mothods which shouldn't even need to be used and enhances security.

Addected models are: IceOre, IceProduct, Mineral, Ore, Region, System, and
Variation.

Also merged the _form partials and copied the code into the edit view since
it will be the only one using these partials.