default the layer to the only layer if there is only one
default the layer to the only layer if there is only one

jclark118/mage-server,jclark118/mage-server,ngageoint/mage-server,ngageoint/mage-server,newmanw/mage-server,newmanw/mage-server,newmanw/mage-server,ngageoint/mage-server,jclark118/mage-server,ngageoint/mage-server