instance badges form: fix bug where badges are not updated
instance badges form: fix bug where badges are not updated

The Controllers update method did not call the underlaying
update method, but the add method so the form did nothing.

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