Flight Toolkit website changes

I noticed recently that my website stopped updating when I added new posts, and the links between pages were not working.  I ended up having to rebuild the site, so the structure is a bit different than before.  If you notice any weird behavior differences on the website or in the Addon Manager (such as downloading addons), please let me know.  Also, as part of these changes I removed all the older versions of the toolkit other than 0.7.3 (XP support), so if you needed an older one for some valid reason, please let me know.