Update trunk to 1.8.0

git-svn-id: https://plugins.svn.wordpress.org/wordpoints/trunk@1035179 b8457f37-d9ea-0310-8a92-e5e31aec5664
Make 1.8.0 the stable tag

git-svn-id: https://plugins.svn.wordpress.org/wordpoints/trunk@1035183 b8457f37-d9ea-0310-8a92-e5e31aec5664