[LMS-956] added '(ALL)' Sample Type (not selected automatically)

.../client/web/client/application/model/SampleTypeModel.java

...eb/client/application/ui/sample/SampleBrowserToolbar.java

...ient/application/ui/sample/SampleTypeSelectionWidget.java

...client/web/client/application/ui/widget/DropDownList.java

.../cisd/openbis/generic/server/business/bo/SampleTable.java

...sx/cisd/openbis/generic/server/dataaccess/ISampleDAO.java

.../cisd/openbis/generic/server/dataaccess/db/SampleDAO.java

...msx/cisd/openbis/generic/shared/basic/dto/EntityType.java

...nbis/generic/shared/basic/dto/EntityTypePropertyType.java