2nd image mouseover effect for all product listings

block_most_popular.php (featured stencils):
271-280     - populate the image array
577-582     - check if the 2nd image is the same as 1st; use 3rd if
needed
713     - price strikethrough fix

block_product_list.php (featured stencils):
620-629     - populate the image array
990-995     - check if the 2nd image is the same as 1st; use 3rd if
needed
Added email nofication on execution