Add admin for weather station data sources: Main menu item and default page (list)

...ontroller/servlet/WeatherStationDataSourceController.java

...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/WEB-INF/web.xml

src/main/webapp/templates/master.ftl

src/main/webapp/templates/weatherStationDataSourceList.ftl