Instead of sending the signature token in the GET request, this commit uses the "time limited signature token" documented at http://yourls.claytondaley.com/admin/tools.php to secure messages. This reduces the damage that could be done if the resulting token and time stamp are somehow exposed.
Fixed typo.
 - This commit introduces an option to style shortlinks more like permalinks in the Posts UI.  It is a proof-of-concept.  The UI needs some styling tweaks to make it 100% consistent.
Merge branch 'permalink-style'