fixed columns not zeroing out, added ability for negative values in bargrid
fixed columns not zeroing out, added ability for negative values in bargrid

laurenancona/Chartbuilder,NerdWallet/Chartbuilder,correctiv/Chartbuilder,Quartz/Chartbuilder,DistilledLtd/Chartbuilder,SCPR/Chartbuilder,bwareham/Chartbuilder2,SCPR/Chartbuilder,ducroquet/Chartbuilder,ajam/Chartbuilder,defenseone/Chartbuilder,bryceroney/Chartbuilder,kway/Chartbuilder,louisstow/Chartbuilder,ducroquet/Chartbuilder,kway/Chartbuilder,ajam/Chartbuilder,johnsonchandra/Chartbuilder,louisstow/Chartbuilder,zhangweiabc/Chartbuilder,valdobc/volt-teste,laurenancona/Chartbuilder,bwareham/Chartbuilder2,bryceroney/Chartbuilder,correctiv/Chartbuilder,defenseone/Chartbuilder,taylorhxu/Chartbuilder,nowthis/Chartbuilder,conversation/Chartbuilder,zhangweiabc/Chartbuilder,Quartz/Chartbuilder,DistilledLtd/Chartbuilder,NerdWallet/Chartbuilder,valdobc/volt-teste,smartkarma/Chartbuilder,johnsonchandra/Chartbuilder,taylorhxu/Chartbuilder,nowthis/Chartbuilder