Remove unnecessary $regform existence check.

This condition was a leftover when this JS was included in the MAIN.js
file, when it only made sense to run it if form#registration existed on
the page.

The JS now lives in the same page as form#registration, so no need the
check (or the extra indent ;) ).
Style payment form with alignment.

Alignment for both large and mobile screens improves form appearance.
Add 'Remove team' functionality.

Implement a button to remove a team from the player payment page.  This necessitated a slight restructuring to the page.  Now even the first FIELDSET gets its 'Add team' button rolled into it.
Registration payment styling.

Add styling to new buttons.
General javascript cleanup.

Remove commented out code.  Clarify subfunctions with comments.
Remove console.log's.
Payment summary table styling.

Various spacing and font effects added for readability.
Paypal button moved into previous DIV.

For spacing, it makes sense to have the Pay Now button directly under the summary table.  The hidden property remains: That is, the Paypal button will only appear once the subtotal is calculated to be positive.