Strip archaeologist of all links to the truthsayer website and smuggler backend

[akindyakov]

I want to resurrect some of the functionality of Archaeologist. Due to my current work setup, I can't use the extension that connects to anything Mazed/Foreword-related. So, I need an entirely local mode without any connections. To make the extension work in local mode:

• Deleted the authorisation system.
• Disconnected, perhaps temporarily, Archaeologist from PostHog. But left all the code intact.
• Disconnected Truthsayer from auto-build. It's broken now. However, I'd like to reuse some elements from it in Archaeologist itself, so I keep the code for now.
• Disabled autosaving and autosuggestion of relevant nodes for now. It's just too damn slow even on my laptop.