Actually set the JSON description string
Actually set the JSON description string

Embarassingly, this was not being done in the setJSONDescription()
member function.

mathturtle/tomviz,thewtex/tomviz,OpenChemistry/tomviz,OpenChemistry/tomviz,cryos/tomviz,thewtex/tomviz,OpenChemistry/tomviz,cjh1/tomviz,mathturtle/tomviz,mathturtle/tomviz,thewtex/tomviz,cryos/tomviz,cryos/tomviz,cjh1/tomviz,cjh1/tomviz,OpenChemistry/tomviz