Remove nbextensions and related code

.gitignore

@@ -64,9 +64,6 @@ target/
 
 # Coverage files
 .coverage.*
-.selenium.screenshot.png
-nbgrader/tests/formgrader/selenium.screenshot.png
-nbgrader/tests/nbextensions/selenium.screenshot.png
 
 # Autogenerated docs
 nbgrader/docs/build

nbgrader/__init__.py

@@ -33,65 +33,6 @@ def _jupyter_server_extension_points():
         "module": "nbgrader"
     }]
 
-
-# Classic notebook extensions
-def _jupyter_nbextension_paths():
-    paths = [
-        dict(
-            section="notebook",
-            src=os.path.join('nbextensions', 'create_assignment'),
-            dest="create_assignment",
-            require="create_assignment/main"
-        ),
-        dict(
-            section="tree",
-            src=os.path.join('nbextensions', 'formgrader'),
-            dest="formgrader",
-            require="formgrader/main"
-        ),
-        dict(
-            section="notebook",
-            src=os.path.join('nbextensions', 'validate_assignment'),
-            dest="validate_assignment",
-            require="validate_assignment/main"
-        ),
-    ]
-
-    if sys.platform != 'win32':
-        paths.append(
-            dict(
-                section="tree",
-                src=os.path.join('nbextensions', 'assignment_list'),
-                dest="assignment_list",
-                require="assignment_list/main"
-            )
-        )
-        paths.append(
-            dict(
-                section="tree",
-                src=os.path.join('nbextensions', 'course_list'),
-                dest="course_list",
-                require="course_list/main"
-            )
-        )
-
-    return paths
-
-
-# Classic notebook server extensions
-def _jupyter_server_extension_paths():
-    paths = [
-        dict(module="nbgrader.server_extensions.formgrader"),
-        dict(module="nbgrader.server_extensions.validate_assignment")
-    ]
-
-    if sys.platform != 'win32':
-        paths.append(dict(module="nbgrader.server_extensions.assignment_list"))
-        paths.append(dict(module="nbgrader.server_extensions.course_list"))
-
-    return paths
-
-
 def _load_jupyter_server_extension(app):
     load_assignments(app)
     load_courses(app)

nbgrader/docs/source/contributor_guide/releasing.rst

@@ -79,9 +79,9 @@ The version number should have been changed in the following files :
 - ``pyproject.toml``
 - ``package.json``
 - ``nbgrader/_version.py``
-- ``nbgrader/nbextensions/assignment_list/main.js``
-- ``nbgrader/nbextensions/course_list/main.js``
-- ``nbgrader/nbextensions/validate_assignment/main.js``
+- ``src/assignment_list/index.ts``
+- ``src/course_list/index.ts``
+- ``src/validate_assignment/index.ts``
 
 Rebuild the documentation
 -------------------------
@@ -173,6 +173,6 @@ As a reminder, the files concerned are :
 - ``pyproject.toml``
 - ``package.json``
 - ``nbgrader/_version.py``
-- ``nbgrader/nbextensions/assignment_list/main.js``
-- ``nbgrader/nbextensions/course_list/main.js``
-- ``nbgrader/nbextensions/validate_assignment/main.js``
+- ``src/assignment_list/index.ts``
+- ``src/course_list/index.ts``
+- ``src/validate_assignment/index.ts``