Recently Updated: Fixing up the master index of E. L. Moore posts

There are a number of tasks that need to be done to start preparing the E. L. Moore book. I decided to get going with some housekeeping and began updating the master index to all the E. L. Moore related posts. The last time that was done was 3 March 2019, and even though I've made a lot of posts on E. L. Moore since then, I've let the index go to seed. So far, I've straightened out some of the index's formatting issues, and updated the entries to the end of 2019. I can see there's a lot more indexing work to be done, although tedious this will help me review the material, and should be useful in putting together a first draft of the book's table of contents.