Different method of sanitising the input is used within the update_feed_term_cache method, quote characters are now checked for and rejected in settings page submissions, various other minor code improvements.

git-svn-id: https://plugins.svn.wordpress.org/devbuddy-twitter-feed/branches/3.1.1@940427 b8457f37-d9ea-0310-8a92-e5e31aec5664