* For SM Trial orgs, now scaling PM seat count with SM seat count adjustments
* Split Billing related organization endpoints into billing owned controller
* Updated billing organizations controller to use a primary constructor to reduce boilerplate
* Fixed error where ID couldn't be mapped to subscription endpoint guid param
* Updated billing OrganizationController endpoints to not manually create the GUID from the string ID
* Banished magic string back to the pit from whence it came
* Resolved errors in unit tests
