activate ipywidgets after install

install.sh

@@ -127,6 +127,7 @@ else
     then
       sudo apt-get -qy install python3-pip
       pip3 install -U $packages
+      jupyter nbextension enable --py widgetsnbextension
       if [ -d ${HOME}/.local/bin ]
       then
 	echo 'export PATH=${HOME}/.local/bin:${PATH}' >> ${HOME}/.profile