v3.41.3 Common folder reorganization

Note this was not released

v3.41.4 will be released instead

API

• Fix: Default eyewear can be bought back if lost (thanks to @Ozzystrasza)
• Fix: A/B tests are correctly assigned for new Facebook-authenticated accounts, and not assigned to existing users creating local login
• Fix: Use "(s)" pluralization instead of assuming plural in some strings (thanks to @Mathwhiz)
• Chore: Locale files updated

Client

• Fix: Remove extra blank space in Magic Potion section of Mounts page (thanks to @Ozzystrasza)
• Fix: Better Pusher connection handling for real-time chat

Repository

• Refactor: /common folders moved to /website/common
• Chore: NPM shrinkwrap updated