## Context
- All flatEntity should extend SyncableEntity
- SyncableEntity should now have applicationId and application relation
- Fix syncApp deletion, should now properly use migration v2 to delete
syncable entities
## Context
Introducing a new SyncableEntity abstraction that can be extended by
Entities that we want to "sync" via their universal identifier (the
class will add this uuid to the entity). Starting with views, will
refactor existing syncable entities such as objects/fields later