Fix a bug that caused quotes and other special characters in the broken link CSS and removed link CSS fields to be auto-escaped with a slash, potentially breaking the CSS.

Cause: WordPress emulates the long-deprecated "magic quotes" misfeature that was available in old versions of PHP. As a result, all POST and GET data is addslashes'ed and must be cleaned before use.

git-svn-id: https://plugins.svn.wordpress.org/broken-link-checker/trunk@935117 b8457f37-d9ea-0310-8a92-e5e31aec5664