feat: 工单多级审批 + 模版创建 (#6640)

* feat: 工单多级审批 + 模版创建

* feat: 工单权限处理

* fix: 工单关闭后 再审批bug

* perf: 修改一点

Co-authored-by: feng626 <1304903146@qq.com>
Co-authored-by: ibuler <ibuler@qq.com>

apps/tickets/errors.py

@@ -0,0 +1,9 @@
+# -*- coding: utf-8 -*-
+#
+from django.utils.translation import ugettext_lazy as _
+
+from common.exceptions import JMSException
+
+
+class AlreadyClosed(JMSException):
+    default_detail = _("Ticket already closed")