Refactor: use customerData array instead of just name.

 - Now the API requires you to send customerData array of dictionaries,
with at least 1 element (dictionary with 2 items “Name”: “name” and
“Value”: ”Jane Doe” for example).
 - Quick-apply links are now holding customerData serialisation and
serial. customerData is a JSON serialisation of the following:
{ customerData: [
  {
      “Name”: “name”,
      “Value”: “Jane Doe”
  }
] }
 - this JSON serialisation is then base64 encoded and finally
url-encoded.
 - serial is also base64 -> url-encoded.