API saves logged in users implicitly and can be explicitly queried to retrieve the saved user.  Cleaned up CredentialManager a bit as well
Fixed data set name character limit, reformatted QueueUploaderView.m code spacing
Microfixes to pr 24
Removed the awful implementation of storing results in prefs to pass back to view controllers; used proper delegate implementation and method calls insteads, feedback now exists for uploading from the queue view