Keybase app behaves like malware on Windows

When I install the Keybase app, I get no questions asked about if I want you to create a new virtual filesystem on my computer. I don't.

When I install the Keybase app, I don't get asked if it's ok for Keybase to automatically start on startup. It's not.

When I try to right-click on the Keybase systray icon to close it, it opens some weird dialog instead of a right-click menu with a `Quit Keybase` -option.

There is an annoying auto-updater nag screen that feels entitled to pop up whenever regardless of what I'm doing and how little it has to do with Keybase.

1. Make Keybase not autostart, it does not need to run for the normal operation of my computer, I can launch it when I need something from Keybase
2. Make the virtual drive an optional thing, I don't want it poisoning my computer, ASK before installing it.
3. Make your auto-updater automatically update the app when I launch it, instead of nagging at me to click on things when I'm middle of something actually important
4. Fix your systray icon to behave appropriately

No files, tests, or entry points are named. Start by reproducing the Windows installation, startup, virtual-drive, updater, and systray behavior; done means each requested behavior is corrected and verified without unwanted prompts, autostart, dialogs, or updater nags.

Written by the indexing model from the issue text.