fix editing of milestones for non-admin users by removing a superfluous check
fix editing of milestones for non-admin users by removing a superfluous check

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