@mstan — sorry that you haven't received a response.
NodeBB doesn't save the Mongo database anywhere specific on the file system, it would be wherever the insulted MongoDB install saves it's data.
To start, I just want to say that I absolutely love NodeBB. I have tried several times to develop forums on Node myself and failed. I want to start working on my own theme, but I need to change the template files a bit before I do, and this includes the copyright at the bottom. Just to be clear, I am still going to give NodeBB credit. There will be a link back, but I would like to customize it. That said, I have looked in the footer template file and can not find the copyright anywhere else. So any help would be greatly appreciated.
@Popatop15 It's not in the theme templates. You can find it in ACP -> Extend -> Widgets under "Global Footer"
Ok, thank you very much!
You can modify a lot with the css editor in the acp