bump jlab back down, install node deps

Author: bollwyvl

docs/conf.py

@@ -4,7 +4,7 @@
 
 import pathlib
 import sys
-
+import subprocess
 import nbsphinx
 
 HERE = pathlib.Path(__file__).parent
@@ -105,3 +105,4 @@ def setup(app):
     """ Runs before the "normal business" of sphinx. Don't go too crazy here.
     """
     app.add_css_file("css/custom.css")
+    subprocess.Popen(["jlpm", "--ignore-optional"])

docs/rtd.yml

@@ -9,7 +9,7 @@ dependencies:
       - -e ..
       - graphviz
       - importlib_metadata
-      - jupyterlab >=2,<2.1.0a0
+      - jupyterlab >=1,<1.3.0a0
       - nbsphinx >=0.5.0,<0.5.1a0
       - pytest-check-links
       - recommonmark