Change isLoaded to brainIsLoaded if disableUserSync if set

[jplindquist]

Summary

Resolves #523

Requirements (place an x in each [ ])

• [x ] I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• [x ] I've read and agree to the Code of Conduct.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #524 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #524   +/-   ##
=======================================
  Coverage   85.55%   85.55%           
=======================================
  Files           6        6           
  Lines         353      353           
  Branches       79       79           
=======================================
  Hits          302      302           
  Misses         29       29           
  Partials       22       22

Impacted Files	Coverage Δ
src/bot.coffee	73.68% <100%> (ø)	⬆️

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