Allow request.params in MockRequest
Allow request.params in MockRequest

This fixes test_url after the parent commit.

phihag/adhocracy,liqd/adhocracy,alkadis/vcv,phihag/adhocracy,DanielNeugebauer/adhocracy,liqd/adhocracy,alkadis/vcv,DanielNeugebauer/adhocracy,DanielNeugebauer/adhocracy,DanielNeugebauer/adhocracy,liqd/adhocracy,alkadis/vcv,liqd/adhocracy,phihag/adhocracy,alkadis/vcv,phihag/adhocracy,DanielNeugebauer/adhocracy,phihag/adhocracy,alkadis/vcv