Config-ception

[kaguy4]

This is the prerequisite for web panel config editor.

MAIN CONFIG FILE: This file will be untouched by the administrator. When doing updates, it will be safe to overwrite everything here.
GLOBAL INSTANCE CONFIG FILE: Defines from the main config file can be copy-pasted & changed on this file, and they will overwrite the values of main config file. Will include stuff like location of mod passwords. Akin to vichan's https://github.com/vichan-devel/vichan/blob/master/inc/instance-config.php
BOARD INSTANCE CONFIG FILE: Will get the values from two files above, and further include database configuration and other possible board-specific configurations (like sensors, if wished to be different on different boards)
BOARD ROOT CONFIG FILE: The reason it's a different file than above is security reasons. Will just link to the board instance config file from the board's root.

I think config files (other than the root one obviously) can just go to dat/ - multi board BBS admins can change locations of config files to be convenient in their systems.