remove the hardcoded floor and table static-bodies and instead, put a static-body on tyhe environment-root that gets shape components inflated under it.

add nav-mesh-helper component to force calling queryCollisionEntities() once an environment has changed

username labe

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.

visibility code