Move notebook conf.d file to use python package name, which will not have a slash in it

.github/workflows/main.yml

@@ -38,12 +38,12 @@ jobs:
 
     - name: Run pip install
       shell: bash -l {0}
-      run: pip install ./jupyter-widget-testwidgets
+      run: python -m pip install ./jupyter-widget-testwidgets
 
     - name: Test install
       shell: bash -l {0}
       run: |
-           test -d $CONDA_PREFIX/share/jupyter/nbextensions/jupyter-widget-testwidgets
-           test -f $CONDA_PREFIX/etc/jupyter/nbconfig/notebook.d/jupyter-widget-testwidgets.json
-           test -d $CONDA_PREFIX/share/jupyter/labextensions/jupyter-widget-testwidgets
-           test -f $CONDA_PREFIX/share/jupyter/labextensions/jupyter-widget-testwidgets/package.json
+           test -d $CONDA_PREFIX/share/jupyter/nbextensions/@jupyter-widgets/jupyter-widget-testwidgets
+           test -f $CONDA_PREFIX/etc/jupyter/nbconfig/notebook.d/jupyter_widget_example.json
+           test -d $CONDA_PREFIX/share/jupyter/labextensions/@jupyter-widgets/jupyter-widget-testwidgets
+           test -f $CONDA_PREFIX/share/jupyter/labextensions/@jupyter-widgets/jupyter-widget-testwidgets/package.json

tests/testconfig.yml

@@ -3,6 +3,6 @@ default_context:
     author_email: "[email protected]"
     github_project_name: "jupyter-widget-testwidgets"
     github_organization_name: "jupyter"
-    npm_package_name: "jupyter-widget-testwidgets"
+    npm_package_name: "@jupyter-widgets/jupyter-widget-testwidgets"
     npm_package_version: "1.1.0"
     project_short_description: "A Test Jupyter Widget Library"

{{cookiecutter.github_project_name}}/MANIFEST.in

@@ -5,7 +5,7 @@ graft js
 graft tests
 prune **/node_modules
 
-include {{ cookiecutter.npm_package_name }}.json
+include {{ cookiecutter.python_package_name }}.json
 
 include LICENSE
 include setup.py

{{cookiecutter.github_project_name}}/setup.py

@@ -36,7 +36,7 @@
     ('share/jupyter/nbextensions/{{ cookiecutter.npm_package_name }}', '{{ cookiecutter.python_package_name }}/nbextension', '*.*'),
     ('share/jupyter/labextensions/{{ cookiecutter.npm_package_name }}', '{{ cookiecutter.python_package_name }}/labextension', "**"),
     ("share/jupyter/labextensions/{{ cookiecutter.npm_package_name }}", '.', "install.json"),
-    ('etc/jupyter/nbconfig/notebook.d', '.', '{{ cookiecutter.npm_package_name }}.json'),
+    ('etc/jupyter/nbconfig/notebook.d', '.', '{{ cookiecutter.python_package_name }}.json'),
 ]
 
 cmdclass = create_cmdclass('jsdeps', data_files_spec=data_files_spec)