disable heatmap support for ie11
disable heatmap support for ie11

melalj/maptable,Packet-Clearing-House/maptable,Packet-Clearing-House/maptable,Packet-Clearing-House/maptable,melalj/maptable,melalj/maptable,melalj/maptable,melalj/maptable,Packet-Clearing-House/maptable