Fixed display of standard price within category products view.
Fixed display of standard price within category products view.

The standard price was displayed wrong if the price calculator
"price excludes tax" was selected and the product was for sale.

wisonwang/django-lfs,leadbrick/django-lfs,pigletto/django-lfs,leadbrick/django-lfs,diefenbach/django-lfs,leadbrick/django-lfs,baffolobill/django-lfs,pigletto/django-lfs,wisonwang/django-lfs,baffolobill/django-lfs,diefenbach/django-lfs,diefenbach/django-lfs,wisonwang/django-lfs,pigletto/django-lfs,baffolobill/django-lfs