Screenshot updates

git-svn-id: https://plugins.svn.wordpress.org/display-categories-widget/trunk@963425 b8457f37-d9ea-0310-8a92-e5e31aec5664
Removing unwanted screens

git-svn-id: https://plugins.svn.wordpress.org/display-categories-widget/trunk@963426 b8457f37-d9ea-0310-8a92-e5e31aec5664
removed old screens

git-svn-id: https://plugins.svn.wordpress.org/display-categories-widget/trunk@963427 b8457f37-d9ea-0310-8a92-e5e31aec5664