add sphinx stuff to env

Author: bollwyvl

ci/steps.conda.yml

@@ -12,12 +12,14 @@ steps:
         geckodriver
         isort
         jupyterlab>=0.35
+        nbsphinx
         nodejs>=10,<11
         pillow
         python-chromedriver-binary
         python>=3.6,<3.7
-        robotframework>=3.1
         robotframework-lint
         robotframework-seleniumlibrary>=3.2
+        robotframework>=3.1
+        sphinx_rtd_theme
   - script: pip install nteract_on_jupyter --no-deps --ignore-installed -vv
     displayName: Pip dependencies