option to set default amount of cups

git-svn-id: https://plugins.svn.wordpress.org/tinycoffee/trunk@954042 b8457f37-d9ea-0310-8a92-e5e31aec5664
tested WP version bump

git-svn-id: https://plugins.svn.wordpress.org/tinycoffee/trunk@954045 b8457f37-d9ea-0310-8a92-e5e31aec5664