adding banner images to the menu calls

git-svn-id: https://plugins.svn.wordpress.org/wp-easycart/trunk@755823 b8457f37-d9ea-0310-8a92-e5e31aec5664
adding banner image uploader script

git-svn-id: https://plugins.svn.wordpress.org/wp-easycart/trunk@755824 b8457f37-d9ea-0310-8a92-e5e31aec5664