Update for version 2.9.5; bug fixes, better detection of duplicate Tweets, Twitter widget with search; YOURLS signature tokens; update German lang

git-svn-id: https://plugins.svn.wordpress.org/wp-to-twitter/trunk@995662 b8457f37-d9ea-0310-8a92-e5e31aec5664
Actually add German update; eliminate .po files from repo

git-svn-id: https://plugins.svn.wordpress.org/wp-to-twitter/trunk@995665 b8457f37-d9ea-0310-8a92-e5e31aec5664