ManualPayment administration.
Added initial admin-interface to handle manual payments (invoices). We basiclay have three stages:
- uncompleted: invoice not sent
- invoiced: invoice sent to
- completed: invoiced payed in full
removed unused view
Completed admin of manual payement.

All manual payments goes through three phases:
- uncompleted => just registert, not handled jet
- invoiced => we have sent the invoice to the company.
- completed => we have received payment from the company.