Avoid accessing data[0] when not defined.  Resolves issue #486.
Force cases environment to use textstyle rather than displaystyle.  Resolves issue #485.
Avoid accessing data[0] with under/over scripts and mlabeledtr too. Address review command of issue #486.
Remove debug logging. Address review comment of issue #485.
Merge remote-tracking branch 'dpvc/issue486' into develop

Resolves issue #486.
Merge remote-tracking branch 'dpvc/issue485' into develop

REsolves issue #485.