Updated trunk version to 1.4.5

git-svn-id: https://plugins.svn.wordpress.org/mycred/trunk@911244 b8457f37-d9ea-0310-8a92-e5e31aec5664
removed old files.

git-svn-id: https://plugins.svn.wordpress.org/mycred/trunk@911246 b8457f37-d9ea-0310-8a92-e5e31aec5664