Random products and purposes

[MKelm]

First I had the idea to implement fixed products, but it might be a better approach to implement random products with purposes.
Purposes should depend on the used TLs of technology fields.

The products article contains a new content and can be extended with more information about random products.

[MKelm]

Fixed products might be an option for a modification, but it might be more interesting to have random products in each game.

Random products allow the player to write own product titles and descriptions based on own ideas and own interpretations of technology levels and purposes that makes the product development in each game more unique.

[MKelm]

The current status of the products concept might be enough for the first alpha, closed.