Order responsible requirement (#6866)

* Add BUILDORDER_REQUIRE_RESPONSIBLE setting

- If set, build orders must specify a responsible owner

* Add responsible required setting to other order models:

- PurchaseOrder
- SalesOrder
- ReturnOrder

* Add unit test

* Adjust unit tests

* Settings updates:

- Only check settings for global and user settings
- Plugin settings are not defined at run-time

* typo fix

* More spelling fixes

* Specify responsible owner pk

src/frontend/src/pages/Index/Settings/SystemSettings.tsx

@@ -231,6 +231,7 @@ export default function SystemSettings() {
           <GlobalSettingList
             keys={[
               'BUILDORDER_REFERENCE_PATTERN',
+              'BUILDORDER_REQUIRE_RESPONSIBLE',
               'PREVENT_BUILD_COMPLETION_HAVING_INCOMPLETED_TESTS'
             ]}
           />
@@ -244,6 +245,7 @@ export default function SystemSettings() {
           <GlobalSettingList
             keys={[
               'PURCHASEORDER_REFERENCE_PATTERN',
+              'PURCHASEORDER_REQUIRE_RESPONSIBLE',
               'PURCHASEORDER_EDIT_COMPLETED_ORDERS',
               'PURCHASEORDER_AUTO_COMPLETE'
             ]}
@@ -258,6 +260,7 @@ export default function SystemSettings() {
           <GlobalSettingList
             keys={[
               'SALESORDER_REFERENCE_PATTERN',
+              'SALESORDER_REQUIRE_RESPONSIBLE',
               'SALESORDER_DEFAULT_SHIPMENT',
               'SALESORDER_EDIT_COMPLETED_ORDERS'
             ]}
@@ -273,6 +276,7 @@ export default function SystemSettings() {
             keys={[
               'RETURNORDER_ENABLED',
               'RETURNORDER_REFERENCE_PATTERN',
+              'RETURNORDER_REQUIRE_RESPONSIBLE',
               'RETURNORDER_EDIT_COMPLETED_ORDERS'
             ]}
           />