More seeds: all simple product from MH

All simple products from MH are now seeds.

Signed-off-by: Zeljko <zeljko@zwr.fi>
Base product made as template

Now the Product model has the overridable methods used by views.

Signed-off-by: Zeljko <zeljko@zwr.fi>
Ignore temporary files

Signed-off-by: Zeljko <zeljko@zwr.fi>
Packed products, scaffold and seed from MH db

Created a PackedProduct as a subclass of Product, and it rocks. It
overrides show_price and works awesome when listed with super-products.
MongoMapper does excellent job setting the list of different object
and setting a correct link on each of them.

Note that the plural form, as created by Rails generators is
product_packeds, but at this point that is not crucial.

Seed file contains those products from MH db which were already
marked, there are some missed, which need to be updated on MH
side first.

Signed-off-by: Zeljko <zeljko@zwr.fi>
Switch to Mongoid

I have decided to switch to mongoid instead of MongoMapper. Main
reason: "better documentation", or so the internet says.

However, the two seem to be rather compatible. This commit might
as well show to revert it.