* [14.0][IMP] added default operation on rma group, easy setup before rma lines created
* [IMP] added fields for default route created by wizard on rma group
* fix: get right price after create rma order line
Without this, some policies are not being copied from the
operation selected when creating new rma line from a rma group.
In v16 this patch and the usage of such onchange can be removed
in favor of (pre)computed stored editable fields for all policies
and configuration in the RMA operation.
