Clean money for non-deductible amount

[MegaphoneJon]

Overview

The Contribution API cleans money inputs for 3 of the 4 money fields. This corrects the inconsistency and adds tests for all four.

Before

"Non-deductible amount" treated differently than "fee amount", "net amount", and "total amount".

After

Consistent treatment.

Comments

The easiest way to replicate this is with the command line:

cv api Contribution.create total_amount=\$10 fee_amount=\$5 non_deductible_amount=\$4 financial_type_id=1 contact_id=1

Be sure to read the data back out again rather than relying on the output of the command above, which isn't definitive!

[civibot]

(Standard links)

• If this is your first pull-request for CiviCRM, please browse CONTRIBUTING.md for information about the development and testing processes.
• If you are reviewing this pull-request, you may wish to consult the test sites and the Review Standards (long template, short template).

[eileenmcnaughton]

Thanks @MegaphoneJon

[eileenmcnaughton]

Thanks @MegaphoneJon