put special case for when token is provided on update (change CC)

[kchapple]

When patient is updated, and there is a stripe token passed, need to update customer

[Leo24]

Tested updating Patient [base]/fhir/Patient/85 PUT request with new Stripe token, so Customer ID updates in Database.
Is it that we need in this "bug"?
If not - could you please give me more detailed explanation.

[kchapple]

@Leo24 We shouldn't change the customer ID. Is it possible to just update the Customer's Credit Card information using a new token, we shouldn't have to create a new customer entirely. Maybe I'm misunderstanding how the Stripe Customer update works.

[kchapple]

@Leo24 check out the update-customer documentation https://stripe.com/docs/api?lang=php

When we get a new token, we need to update the "source" parameter with the new token so that the new card becomes the active source.

[Leo24]

Add check if customer exist - update source data
Remove extra set of patient id. Сauses updating wrong patient.
#83