Prototype views seem to have a global namespace about interfacss

[tbrannam]

I see that this has been changed somewhat - although I still find it surprising that Cell prototypes are not namespaced to their containing view. This would mirror the behavior of [UITableView/UICollectionView registerClass:reuseIdentifier:] little better.

[tolo]

Well, I guess the reason for this was that the concept of prototypes is not limited to just tableview/collectionview cells. But I can understand that it sometimes can make life easier if the prototype was scoped/namespaced under a containing view. Adding this in the next commit.