Fix milestone detail view
Fix milestone detail view

This got broken in 5c02f22acc474ae8e9d2261d3ae6b9f881f7b003.

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