code cleanup

git-svn-id: https://plugins.svn.wordpress.org/wpfixedverticalfeedbackbutton/trunk@1054150 b8457f37-d9ea-0310-8a92-e5e31aec5664
code cleanup

git-svn-id: https://plugins.svn.wordpress.org/wpfixedverticalfeedbackbutton/trunk@1054153 b8457f37-d9ea-0310-8a92-e5e31aec5664