First version of observation masking /PolygonService functionality

pom.xml

.../vips/logic/controller/servlet/ObservationController.java

.../nibio/vips/logic/controller/session/ObservationBean.java

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

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

.../no/nibio/vips/logic/entity/rest/ObservationListItem.java

.../no/nibio/vips/logic/entity/rest/PointMappingRequest.java

...no/nibio/vips/logic/entity/rest/PointMappingResponse.java

...java/no/nibio/vips/logic/entity/rest/ReferencedPoint.java

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

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

src/main/resources/db/migration/V5__Add_PolygonService.sql

...ources/no/nibio/vips/logic/i18n/vipslogictexts.properties

...ces/no/nibio/vips/logic/i18n/vipslogictexts_bs.properties

...ces/no/nibio/vips/logic/i18n/vipslogictexts_hr.properties

...ces/no/nibio/vips/logic/i18n/vipslogictexts_nb.properties

...ces/no/nibio/vips/logic/i18n/vipslogictexts_sr.properties

.../no/nibio/vips/logic/i18n/vipslogictexts_zh_CN.properties

src/main/webapp/formdefinitions/observationForm.json

src/main/webapp/js/validateForm.js