Added labels to tomography menu
Added labels to tomography menu

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