Add formset.js to the CategoryForm
Add formset.js to the CategoryForm

FormSets are returning the first forms media property (as all forms
within a FormSet are the same). Thus it is enough to overwrite the
CategoryForm's media property.

liqd/a4-meinberlin,liqd/a4-meinberlin,liqd/a4-meinberlin,liqd/a4-meinberlin