Merge tag '0.4.0' into develop

CHANGELOG.md

jupyter-openbis-extension/__init__.py

jupyter-openbis-extension/connection.py

jupyter-openbis-extension/dataset.py

jupyter-openbis-extension/server.py

jupyter-openbis-extension/static/common.js

jupyter-openbis-extension/static/connectionDialog.js

jupyter-openbis-extension/static/downloadDialog.js

jupyter-openbis-extension/static/entitySearcher.js

jupyter-openbis-extension/static/state.js

jupyter-openbis-extension/static/uploadDialog.js

setup.py