DEV: Product field analysis

DEV: will generally mean that this is something only
used for development, experimenting etc, and would then
at some point be removed.

These file contains all table fields that might need
attention with their distinct values.

Signed-off-by: Zeljko <zeljko@zwr.fi>
Tax helper and config

Taxes are defined in the config/tax.rb, which is based
on the App gem. This makes them visible as constants
across the app, but the helper should be the only one
really calculating taxes.

Signed-off-by: Zeljko <zeljko@zwr.fi>
Front layout settings in config/front

This allows for instance boxes selection not to be
hardcoded. In addition, would be a good place for templates
etc.

This commit only adds files, settings are not used though.

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