Reuse NAF's media stream source to avoid distorted audio in Safari

lint and delint html

fix typo causing left super-hand to get nested under the watch

remove the watch since we have the hud now. Will need to fix the bug (https://github.com/mozilla/mr-social-client/issues/171) if we add it/something similar back in.

aframe-extras navmesh

Bug/macos blur perf

Use external environments

# Conflicts:
#	src/components/character-controller.js
#	src/hub.html

Add closing environment html tag