Don't try to create the clearspeak menu if enrichment is disabled

[dpvc]

This PR prevents the menu code from trying to create the clearspeak setting menu when enrichment is off (and so the webworker may not even be created yet). When enrichment is off, the speech menu is disabled, so the clearspeak menu will not be available in that case, so it is OK to not generate it.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.71%. Comparing base (4d1e195) to head (3d27197).
Report is 20 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1292   +/-   ##
========================================
  Coverage    86.71%   86.71%           
========================================
  Files          337      337           
  Lines        83979    83979           
  Branches      4750     4750           
========================================
  Hits         72826    72826           
  Misses       11130    11130           
  Partials        23       23           

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[zorkow]

lgtm.