Refactoring GISUtil stuff from VIPSLogic to VIPSCommon

...s/logic/controller/servlet/PointOfInterestController.java

.../no/nibio/vips/logic/controller/session/ForecastBean.java

...io/vips/logic/controller/session/PointOfInterestBean.java

src/main/java/no/nibio/vips/logic/entity/Observation.java

...main/java/no/nibio/vips/logic/entity/PointOfInterest.java

src/main/java/no/nibio/vips/logic/service/LogicService.java

.../java/no/nibio/vips/logic/service/ObservationService.java

src/main/java/no/nibio/vips/logic/util/GISEntityUtil.java

...test/java/no/nibio/vips/logic/util/GISEntityUtilTest.java

...ibio/vips/util/weather/YrWeatherForecastProviderTest.java