[Typo3-shop] Shipment / tax issues 2.3.13

[Julo Ferianc]

Hi Franz, just upgraded to v2.3.13 and found out that you've reworked 
SHIPMENT a good deal. Good news for me, as it removes need of 
calculation scripts and transfers all that I need into the template 
config. However either I don't have a grip of new method or there's a 
bug somewhere.

With following config:
plugin.tt_products.shipping {
...
   TAXpercentage = 19.00
   20.priceTax.type = count
   20.priceTax.1 = 119.00
   # 20.priceNoTax.1 = 100.00 # deprec.?
   20.priceTax.6 = 0
   # 20.priceNoTax.6 = 0 # deprec.?
...
}

Having:
- 1-5 items in basket
- shipping method 20 selected (under 6 items = 100+VAT, 6+ items = free)

Results in following problems:
1. Basket marker ###PRICE_SHIPPING_TAX### should IMO be replaced for 
119.00, instead it gets replaced for 141.61
(i.e. 119 * 1.19 ~ priceTax * 1+(tRate))

2. Marker ###PRICE_SHIPPING_NO_TAX### gets replaced for 0 all the time

Thanks for any hints ...

Julo