LMS-1645 dynamix: draft support of timepoints in the GUI

.../screening/client/web/client/IScreeningClientService.java

...ening/client/web/client/IScreeningClientServiceAsync.java

...b/client/application/detailviewers/WellContentDialog.java

...client/web/client/application/detailviewers/WellData.java

...ient/web/client/application/detailviewers/WellImages.java

...n/screening/client/web/server/ScreeningClientService.java

...creening/shared/basic/dto/ChannelStackImageReference.java

...in/screening/shared/basic/dto/DatasetImagesReference.java

...screening/shared/imaging/dataaccess/IImagingQueryDAO.java