tagging version 2.4.4, cleanup of warnings in wp debug

git-svn-id: https://plugins.svn.wordpress.org/seamless-donations/trunk@760711 b8457f37-d9ea-0310-8a92-e5e31aec5664
moving stable tag to 2.4.4

git-svn-id: https://plugins.svn.wordpress.org/seamless-donations/trunk@760712 b8457f37-d9ea-0310-8a92-e5e31aec5664