Update stripe submodule
Add PaymentKit as its own submodule
Update PaymentKit submodule
update payment kit
[WIP] Get app building in iOS 8
Get the WindorView rendering horizontal and vertical
Get PanelView centering correctly
Get full stripe flow back in place
Fix GameCenter for iOS 8
Add default behaviors to supress warnings
Switch some assigns to retains
update to latest PaymentKit fork
Update Stripe to latest fork
Update to payment kit for bug fix
Add extra step to select payment option
[WIP] Move PK controller code into it's own VC class
Apply major iOS 8 fixes

* remove apple pay components from this branch
* add next button to all form fields to accommodate keyboards without return keys
* separate out child and parent delegates in the wallet to support subview navigation using top bar navigation buttons
Fix tableView cell scrolling on next button
Merge branch 'refs/heads/master' into iOS8

Conflicts:
	ExampleApp/Assets/Plugins/Arbiter/ArbiterBinding.cs
Fix when opponent has null score in unviewed tournaments