Finishing up harp stuff

This sort of finishes up the harp stuff. I've only added the past year of past events. It was a lot of data entry and couldn't get to it all just yet. 

This also breaks the flickr photos, but can add those back in another PR.

The past event stuff might be getting out of hand. Probably useful to break it up by year so that that json file doesn't get super crazy. There is probably a way better way to organize this stuff, but at least we can just add it to the `_data.json` each month.