Appendix Labels: "Part I" and TOC

* Use the correct label for headers "Part III" and "Part V"
* Remove the TOC from the content in the appendices; we generate a better version and their TOC has lots of errors

Remaining for labels:
1. Catch some missing headers (which are in P tags)
2. Account for parentheses-based paragraph markers (in Ps and HDs)
3. Account for decimal-based paragraph markers (in Ps and HDs)