Hi Matt. I am more than happy for you to work on this.
The original HTML file we are editing may be found in the very first post in this discussion topic above.
I am currently working from Vol. 1 of the Mvu.
If you would like to pick up from Vol. 2 that would be great.
If you haven’t already, may I suggest you read the posts in this topic… there is some useful information there, especially about the Pali-English keyboard and the use of an HTML text editor such as Sublime Text.