* Added Human and AI filters, separated civFilter from nationFilter (very similar and yet slightly different)
* Changed "Human" and "AI" to "Human player" and "AI player"
* Fixed the links in the docs
* Fixed broken tables
Tables without a line break above are not treated as valid tables
* Removed redundant table of contents and formatted some bulleted lists
* The image in Regions.md is now properly displayed
* Standardized list indentation, line spacing, table header rows, and JSON code blocks
* Standardized headers
* Fixed remaining broken links, edited pseudo-footnotes
