[ADD] upload the module purchase_order_discount migrated to 8.0
Merge pull request #176 from ClearCorp-dev/8.0-purchase_order_discount-dg

[MRG] upload the module purchase_order_discount migrated to 8.0
Slovene translation added
Merge branch '8.0' of github.com:sysadminmatmoz/odoo-clearcorp into 8.0