review project plugin structure

[needmorecowbell]

The plugins may need to be separated out into their own repositories. It would be useful to have access to things like the EMLPool and Sources without passing them in as parameters each time. This would expand the functionality of the web server significantly. While I like the idea of modular plugin based design, it might be best to focus on keeping the components of the core service modular, and separate out the web server and api server into their own projects.