Implement
Tests
Merge commit '99202d6af839c955edb506980b51d7bc9485c408' into 213-reviewable-polygon

Conflicts:
	src/Common/src/uk/ac/ox/zoo/seeg/abraid/mp/common/dto/json/GeoJsonDiseaseExtentFeatureProperties.java
	src/Common/test/uk/ac/ox/zoo/seeg/abraid/mp/common/dto/json/GeoJsonDiseaseExtentFeaturePropertiesTest.java
Merge branch 'master' into 213-reviewable-polygon
Merge pull request #195 from SEEG-Oxford/213-reviewable-polygon

Polygon should only be reviewed if disease extent class has changed since last generation