LMS-819 GUI improved

...d/openbis/generic/client/web/client/application/Dict.java

.../client/application/ui/data/AbstractExternalDataGrid.java

...ic/client/web/client/application/ui/widget/FieldUtil.java

...openbis/generic/server/business/bo/ExternalDataTable.java

...emsx/cisd/openbis/generic/shared/basic/BasicConstant.java

...cisd/openbis/generic/shared/dto/DataSetUploadContext.java

...java/ch/systemsx/cisd/openbis/public/common-dictionary.js

...bis/generic/server/business/bo/ExternalDataTableTest.java