Zero inventory hider adjustment / version

Changed function to add class to the list ul instead of the li itself.
This allows all products within the list to be hidden/shown on button
click regardless of whether or not they have been loaded by infinite
scroll or not.
Infinite product list additional items point raised

This should compensate for the extra footer space and load new product
when the 2nd to last row is reached.
redirect modal and style sheet added

site address also populated
version