refactor: flatten pages structure and update setup.php for Git Sync

- Move pages/{fqdn}/pages/* to pages/{fqdn}/*
- Update setup.php to look at /user/pages/{hostname}
- Prepare for Git Sync to sync pages/ to user/pages/

pages/charters.turnsys.com/70.Handbook.SourceMaterial.company.security/default.md

@@ -0,0 +1,26 @@
+---
+title: 'Password Managers'
+menu: 'Password Managers'
+---
+
+---
+title: Security
+sidebar: Handbook
+showTitle: true
+---
+
+It is critical that everyone in the PostHog team follows these guidelines. We take people not following these rules very seriously - it can put the entire company and all of our users at risk if you do not.
+
+## Password Managers
+
+You **must** make use of a password manager; it simply isn't possible to use appropriate passwords securely without one.
+
+PostHog uses [1password](https://1password.com/) for storing all passwords.
+
+## Password Strength
+
+Please use strong passwords for everything. Use the 1password password generator that comes with the app in all cases. Do not repeat passwords across different sites. 
+
+## Dual Factor Authentication
+
+You should enable dual factor authentication for any account where the option is available, especially those which are core to your work.