setting history id when is available on the jupyter notebook and the selected dataset type, comments

SSDM-8127: interactive entity selector implemented. bug in get_entity_for_identifier() of sample.py fixed

fixed assignment bug

improved download dialog

First version for public use

first version that works with pip install only

Download dialog improvements: add spinner, close dialog only after downloads are complete, display value of $NAME property in dataset table, persist values entered in dialog fields.