generate statistics again and fixing inconsistencies across the entries, html output with vanilla-datatable included

games/strategy/zero_k.md

@@ -5,7 +5,8 @@ _A free multi-platform open source real-time strategy video game._
 - Home: http://zero-k.info/
 - Media: https://en.wikipedia.org/wiki/Zero-K
 - Download: http://zero-k.info/Wiki/Download
-- Keywords: RTS
+- State: mature
+- Keywords: RTS, popular
 - Code repository: https://github.com/ZeroK-RTS/Zero-K
 - Code language: Lua
 - Code license: GPL-2.0