Call: admin.paydro.com/[event-id]/categories.json.
Move a ticket to a new category.
Call: admin.paydro.com/[event-id]/categories/edit/[category-id].json [POST].
POST DATA.
data[Category][id]
data[Category][name]
Response OK.
ok: true
id:[category-id]
Call: admin.paydro.com/[event-id]/categories/delete/[category-id].json [POST].