Improve the caching layer

[Alextopher]

There are significant problems with the websever cache I designed. The site is generated via a templating engine that reads the config file and creates the site. The results of the templates are almost always unchanging, only extremely rarely will the underlying config change.

In addition, any future statistics we display will be unchanging in hour intervals which can be cached too. The statistics are likely more important as the database requests could take very long depending on how complicated the queries are. The current cache is not great and should probably be replaced with a key value store. This could simply be a Go map.