Working on making intervals appear in the SetTimerViewController. They might also not be properly saving right now.
we currently display all intervals! Next, making them specific to a timer. Probably with ids and things.
added new entity UniqueIDCounter that holds the next unique id for timers and intervals (timerCounter and intervalCounter)
Update for everyone with the ability to add intervals (currently displays all of them and doesn't link them to specific timers) and the beginning of unique ids.