[ADD]Add field issue_id to sale orders. Filter issues for partner of the sale order
[ADD]Add field issue_id to sale orders. Filter issues for partner of the sale order
Merge pull request #116 from ClearCorp-dev/8.0_project_issue_helpdesk_cn

[ADD]-Project_Issue_Helpdesk-Add field issue_id to sale order. Filter issue_id for partner_id of the sale order