Update to Chronoblog

I tightened the space around the buttons, added titles that pop up when the mouse cursor hovers over the buttons, and improved the internal coding a bit. To get these updates, please remove the older version you are currently using and repeat the installation process listed on the Chronoblog page.

Update: Another fix corrected. Authors with no URI were missing the "Posted by " phrase in front of their names. I plan on making those words customizable from the installation page in the near future for non-English speaking users.