This tl;dr summary of Warcraft history nests hundreds of Warcraft events under 4 short paragraphs which can be individually expanded for more detail, with a total of 3 nesting levels.
http://wowloretldr.com
Reddit: https://www.reddit.com/r/wow/comments/6kc5x1/wow_lore_tldr_fansite/
FAQ: http://wowloretldr.com/forums/topic/welcome-notes-faq-and-credits/
This has been in the making for two months, but much more is yet to come. Please enjoy and never hesitate to give feedback!