Fixed bug where saving title with non-alpha character crashed the site. Caused by setting a category name with a non-alpha character such as $. Now I just scrub all characters and only allow letters, numbers, dashes, spaces and underlines. Every other character is too dangerous to allow.


git-svn-id: https://plugins.svn.wordpress.org/clever-seo-keywords/trunk@800213 b8457f37-d9ea-0310-8a92-e5e31aec5664