Version 2.0
Complete rewrite, now with a basic API written in PHP and a front-end written in AngularJS.
Everything is a lot more stable now, and everything is saved in the database in a much safer way. It's also a lot more powerful with a bunch of new features and a nicer UI.
Most importantly, it is hopefully possible for a mere mortal to read and understand the code. This means that I can now add new basic features without fear of having to enter the tangled web of interconnected custom JQuery promises that was version 0.1.