Slight reformatting of code for button
Removed all "name" and "id" fields
Removed all in this list, because both "name" and "id" should be unique on the page, and we dynamically add more, making them non-unique.
Moved the "addNewDebtRow" button into a global function
The function is now globally accessible through FC.calculate.createDebtRow().
It returns a jQuery <p> element that can then be placed where it should.
Ultimately, I would like this function to take a parameter of a Debt object, so we can populate the Debts on the fly.