Tweaked the site cache a bit, please report speedups and errors if any!

I just tweaked the cache a bit, added css files and javascripts to the caching functions.

It shouldn't have any adverse effects, but please let me know if you notice page loading has gotten faster, or any bugs.

Also, I added an option so you can chose to hide the server status block on the frontpage. It's pulled from an external server status site which sometimes is slow to respond and slows down loading of the frontpage.

To hide it, go to your account, click edit and find the block configuration heading and uncheck the server status block.