Correctly add came_from to query string
Correctly add came_from to query string

Previously, existing query string parameters have simply been stripped.

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