Fikset kompatibilitet for nye django versjoner
Viser forfalte fakturaer i rødt
added absolute_max to VareItemsFormSet (ny django versjon?)
Added quarter markers to intrest calculations
Merge pull request #2 from mariusnn/master

Merge pull request #1 from ivarne/master
Update README
Added content types relation for faktura and probably lønn to Bilag