Update cling / start looking at receiver name

WIP commit, updating the cling image and layout to more recent designs
and attempting to get the cast picking up the application receiver name.
Both these need more work - the cling needs layout fixes on the iphone
storyboard and testing and fixes on the ipad storyboard. The app name
currently isn't working at all as I suspect I'm misunderstanding the call
back, and the device manager needs to be an ivar to avoid it getting
reclaimed before its done executing.
Update cling display for iphone and ipad

Only tested on iphone so far. There is an issue with the top nav guide
being the wrong height on rotation portrait to landscape which will need
a look at.
Reenable 1 time only for cling