Changes

* '''Upgrade:''' List of Subscriptions IDs that the user can purchase with this subscription owned and that will result in the cancellation of this subscription. ::- Hint: In this case, GVP is not performing any action. The OB is in charge of sending a TD cancelation. In other words, configuring this relationship has no effect.* '''Incompatible:''' List of Subscriptions IDs that the user cannot purchase with this subscription owned. These Devices are using this relationship in order to filter those subscriptions will not that must be possible hidden to be purchased by the a user.<br />* '''Managed Upgrade''': Identifies the subscriptions that the user can purchase with this subscription owned and that will result in the immediate cancellation of this subscription by GVP side without any additional action from OB side. It is important to notice that this relationship was developed for cPVR and as a consequence:::- Subscription cancellation is not synced with Nagra::- Subscription is not notified to OB.