removed -m which is not a valid uglify-js option anymore
removed -m which is not a valid uglify-js option anymore

motherjones/datawrapper,rubensfernando/datawrapper,plusgut/datawrapper,grepman/datawrapper,kendrick-k/datawrapper,datafunk/datawrapper,ThuyNTran/datawrapper,washingtonpost/datawrapper,qqming113/datawrapper,datafunk/datawrapper,qqming113/datawrapper,devinit/datawrapper,plusgut/datawrapper,robmcloughlin/Insights,datafunk/datawrapper,elaOnMars/datawrapper,robmcloughlin/Insights,grepman/datawrapper,elaOnMars/datawrapper,washingtonpost/datawrapper,grepman/datawrapper,qqming113/datawrapper,motherjones/datawrapper,devinit/datawrapper,devinit/datawrapper,qqming113/datawrapper,elaOnMars/datawrapper,qqming113/datawrapper,kendrick-k/datawrapper,washingtonpost/datawrapper,ThuyNTran/datawrapper,motherjones/datawrapper,qqming113/datawrapper,ThuyNTran/datawrapper,robmcloughlin/Insights,ThuyNTran/datawrapper,elaOnMars/datawrapper,grepman/datawrapper,kendrick-k/datawrapper,rubensfernando/datawrapper,plusgut/datawrapper,grepman/datawrapper,plusgut/datawrapper,washingtonpost/datawrapper,motherjones/datawrapper,motherjones/datawrapper,ThuyNTran/datawrapper,robmcloughlin/Insights,elaOnMars/datawrapper,devinit/datawrapper,elaOnMars/datawrapper,washingtonpost/datawrapper,datafunk/datawrapper,kendrick-k/datawrapper,ThuyNTran/datawrapper,washingtonpost/datawrapper,rubensfernando/datawrapper,kendrick-k/datawrapper,datafunk/datawrapper,rubensfernando/datawrapper,devinit/datawrapper,motherjones/datawrapper,kendrick-k/datawrapper,datafunk/datawrapper,devinit/datawrapper,rubensfernando/datawrapper,grepman/datawrapper,robmcloughlin/Insights