Remove Django pinning in doc requirements. (#1050)

* Remove Django pinning in doc requirements.

This will fix RTD installing conflicting Django versions.

* Update Python version.

* Install as an editable.

* Use up-to-date format for readthedocs config file.

Author: jezdez

.readthedocs.yml

@@ -1,15 +1,29 @@
-# .readthedocs.yml
+# .readthedocs.yaml
 # Read the Docs configuration file
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 
 # Required
 version: 2
 
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.9"
+    # You can also specify other tool versions:
+    # nodejs: "16"
+    # rust: "1.55"
+    # golang: "1.17"
+
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
-  configuration: docs/conf.py
+   configuration: docs/conf.py
+
+# If using Sphinx, optionally build your docs in additional formats such as PDF
+# formats:
+#    - pdf
 
+# Optionally declare the Python requirements required to build your docs
 python:
-  version: 3.7
-  install:
-    - requirements: docs/requirements.txt
+   install:
+   - requirements: docs/requirements.txt

docs/requirements.txt

@@ -1,5 +1,5 @@
-Django>=3.0,<3.1
+Django
 oauthlib>=3.1.0
 m2r>=0.2.1
 mistune<2
-.
+-e .