implemente attachemtn download route

app/ui/BillEditForm.tsx

@@ -55,9 +55,9 @@ export const BillEditForm:FC<BillEditFormProps> = ({ invoiceID, bill: { id, name
                     // <textarea className="textarea textarea-bordered my-1 w-full max-w-sm block" placeholder="Opis" value="Pričuva, Voda, Smeće"></textarea>
 
                     attachment ? 
-                    <a href={`/attachment/${invoiceID}-${id}/${attachment.fileName}`} className='text-center block max-w-[24em] text-nowrap truncate inline-block mt-4'>
+                    <a href={`/attachment/${invoiceID}-${id}/${attachment.fileName}`} target="_blank" className='text-center block max-w-[24em] text-nowrap truncate inline-block mt-4'>
                         <DocumentIcon className="h-[1em] w-[1em] text-2xl inline-block mr-1" />
-                        {attachment.fileName}
+                        {decodeURIComponent(attachment.fileName)}
                     </a>
                     : null
                 }