Last year, this was all written in a hurry so I just copied in the veautiful code. This commit updates the code to use more recent versions of Scala, Scala.js, and my Veautiful UI kit

VNode, MakeItSo, and DiffNode are the main elements in this commit. It's enough to get a basic site up (as tested with a little site). Docs, example code, more detail, etc to follow.