- also changed target for `PaymentDetailInterfaceController`

- we now will receive a dictionary in Payment Result which contains (for now) the payment confirmation number and payment id
- these are displayed in the labels

- in order to avoid having a back button on the Payment Result screen, we present it modally and then pop to the root controller
- this gives the user a view with Cancel in the left corner, and a Home button. Tapping cancel will dismiss the modal, showing the Home screen

- it appears that as a result of setting the target membership of `PaymentDetailInterfaceController` to only WKExtension has enabled this function call which was not working before

- also made IBOutlets `weak` to avoid retain cycles
- we present an action sheet to the user which requires them to tape Pay Now to submit payment
- activity indicator is shown until web service returns
- if successful, we push to the payment result screen and show confirmation number, etc
- if error, we ask the user to try again later

# Conflicts:
#	SynchronyFinancial/SynchronyFinancial WatchKit Extension/FetchData.swift
#	SynchronyFinancial/SynchronyFinancial.xcodeproj/project.pbxproj

- created new `enum PaymentType` to provide a cleaner way to pass code for either current balance payment or minimum due payment

- if the minimum payment due is $0, we disable the button to allow paying that amount
- if the current account balance is $0, we disable the button to allow paying that amount

- we now simply display “Done” as the title to dismiss the payment result screen which is presented modally

- several commits ago we created `careCreditDateFormatter`
- replace usage of regular `DateFormatter` which require setting of format style and locale in each instance to `static` property which automatically returns the date formatter we want