Updated 'no_shipping' and 'rm' options for PayPalPaymentsForm

[danielsokolowski]

From was missing shipping option 2 which prompts the buyer for an address, and requires one before payment is taken. Also it was missing PayPal 'rm' variable which specifies the return FORM method used upon success payment:

Allowable values are: 0 . all shopping cart payments use the GET method 1 . the buyer.s browser is redirected to the return URL by using the GET method, but no payment variables are included 2 . the buyer.s browser is redirected to the return URL by using the POST method, and all payment variables are included

The default is 0. Note: The rm variable takes effect only if the return variable is set.

[danielsokolowski]

Hi @dcramer , I am doing another project and would like to use your fork but need the extra paypal parameters support. Are you going to merge this please?