Bug 8054 - double clicking can cause duplicate payments/fines

Bug 8054 - double clicking can cause duplicate payments/fines

Uses preventDoubleForSubmit() to prevent double form submissions in the fines module.

To test:

Create a manual invoice/fine
Create some manual fines, click save like mad - you should get only one fine (without, you will get several if you click madly enough)

Click Pay fines
Pay some fines, clicking save like mad on each. You should only get one payment. (without, you will get several payments)

Create a manual credit
Create a credit, click save like mad. You should only get one credit. (without you will get several if you click madly enough)

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>