Update to latest GWT 2.8.1
Update to latest GWT 2.8.1

nigel-v-thomas/WWARN-Maps-Surveyor,WorldwideAntimalarialResistanceNetwork/WWARN-Maps-Surveyor,WorldwideAntimalarialResistanceNetwork/WWARN-Maps-Surveyor,nigel-v-thomas/WWARN-Maps-Surveyor,nigel-v-thomas/WWARN-Maps-Surveyor,WorldwideAntimalarialResistanceNetwork/WWARN-Maps-Surveyor