include copy of django_extension, dont install django from git

contrib/django_extensions/docs/print_settings.rst

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+print_settings
+==============
+
+:synopsis: Django managment command similar to ``diffsettings`` but shows *all* active Django settings.
+
+
+Introduction
+------------
+
+Django comes with a ``diffsettings`` command that shows how your project's
+settings differ from the Django defaults.  Sometimes it is useful to just see
+*all* the settings that are in effect for your project. This is particularly
+true if you have a more complex system for settings than just a single
+:file:`settings.py` file. For example, you might have settings files that
+import other settings file, such as dev, test, and production settings files
+that source a base settings file.
+
+This command also supports dumping the data in a few different formats.
+
+More Info
+---------------
+
+The simplest way to run it is with no arguments::
+
+    $ python manage.py print_settings
+
+Some other variations::
+
+    $ python manage.py print_settings --format=json
+    $ python manage.py print_settings --format=yaml    # Requires PyYAML
+
+For more info, take a look at the built-in help::
+
+    $ python manage.py print_settings --help
+    Usage: manage.py print_settings [options]
+
+    Print the active Django settings.
+
+    Options:
+      -v VERBOSITY, --verbosity=VERBOSITY
+                            Verbosity level; 0=minimal output, 1=normal output,
+                            2=verbose output, 3=very verbose output
+      --settings=SETTINGS   The Python path to a settings module, e.g.
+                            "myproject.settings.main". If this isn't provided, the
+                            DJANGO_SETTINGS_MODULE environment variable will be
+                            used.
+      --pythonpath=PYTHONPATH
+                            A directory to add to the Python path, e.g.
+                            "/home/djangoprojects/myproject".
+      --traceback           Print traceback on exception
+      --format=FORMAT       Specifies output format.
+      --indent=INDENT       Specifies indent level for JSON and YAML
+      --version             show program's version number and exit
+      -h, --help            show this help message and exit
+