Revert "sass map terug setten"

This reverts commit 6d146d28504c30a4ff3a4fd6010e154bafc8a8b7.
Fix error page locations
Add redirect to error handlers

 - http://stackoverflow.com/questions/4760683/responsestatus-and-web-xml-error-page
Add IE8 style
update error code on exception and update unit tests