fixed sidebar register back

git-svn-id: https://plugins.svn.wordpress.org/better-anchor-links/trunk@1017596 b8457f37-d9ea-0310-8a92-e5e31aec5664
fixed sidebar register 1.7.3

git-svn-id: https://plugins.svn.wordpress.org/better-anchor-links/trunk@1017598 b8457f37-d9ea-0310-8a92-e5e31aec5664