1、销售订单添加合同编号字段，bfm下单接口添加合同编号同步；2、优化解除装夹工单完工时解绑rfid逻辑，优化工单返工时新工单绑定rfid逻辑

sf_sale/models/sale_order.py

@@ -63,6 +63,7 @@ class ReSaleOrder(models.Model):
 
     model_display_version = fields.Char('模型展示版本', default="v1")
 
+    contract_code = fields.Char('合同编号')
     contract_document_id = fields.Many2one('documents.document', string='合同文件')
     contract_file = fields.Binary(related='contract_document_id.datas', string='合同文件内容')
     contract_file_name = fields.Char(related='contract_document_id.attachment_id.name', string='文件名')