[REF] Pass an array of correct params to the function to create a recurring contribution.

[REF] Pass an array of correct params to the function to create a recurring contribution.

This is getting away from 'passing whatever params we have' to 'passing the right params', which makes it easier
to see what can and can't be altered.

Note that from https://issues.civicrm.org/jira/browse/CRM-17636 we can see that is_email_receipt is not set
for payment purposes but contributionRecur purposes and since it's not a propertyBag param we can leave it off
here