Remove some ideas that were promoted to the plan for xnh 9.0

copperwater committed May 29, 2023

Add remaining lists Except for the Blocked list; I am no longer keeping that and have dispersed the blocked ideas into whatever priority list they belong in. This also adds some information about long term plans from the bottom of the xnethack etherpad to the main page. Also adds the sidebar.

copperwater committed Apr 8, 2023