Friendly Robot Overlord

This website was getting quite slow, so I've enabled caching for all of the html pages (and also reduced the number of items on the page). This isn't the end of the performance tweaking, but it is a start. Things that still need to be done:

• Clear the cache correctly (when someone makes a comment) (so don't be alarmed if your comment doesn't show up straight away).
• Provide some way to navigate to older stuff.
• Add some headers to content so your browser will do some caching too.

I always forget perl syntax, so as a result you will typically see the site going up and down over the time I spend deploying any changes. Consider it a bonus.