Fix JavaDoc of subscribeToTrusts to match recent changes:
- We do notify about all changes of trust values now.
Fix JavaDoc of everything up to getSubscription() to be consistent with the introduction of the Client class:
- Also improve some of it while I was at it.
Change getNotifications(Subscription) to not sort by index anymore:
- This function isn't used for deploying notifications anymore. Its only used for deleting a Subscription. Therefore we don't need the sorting.