Add-ons [DigitalPoint] Better Google Analytics 1.1.2.2

• Moved initial Analytics JavaScript higher up in page execution chain (hopefully prevents third-party gtag() code from failing if wrapped in <xf:js /> tags)

• Made the template modification that injects the main JavaScript work a little better (specifically made compatible with newer versions of XenForo).

• Force user_id to be integer before sending it via Measurement API (usually for things like logging emails being read).
• Made change to Nestable usage so it works in 2.2 and 2.3 (was waiting for Nestable fix: https://xenforo.com/community/threads/nestable-not-coercing-value.225063/ )
• Added option to reset encryption key (used for email tracking) under Admin -> Tools -> Rebuild caches
• Fixed FontAwesome icon on button for setting Measurement ID