Docs: point to Django stable docs

Avoid pointing Djrill users toward Django dev docs.

[ci skip]

docs/conf.py

@@ -253,7 +253,7 @@ texinfo_documents = [
 
 intersphinx_mapping = {
     'python': ('http://docs.python.org/2.7', None),
-    'django': ('http://docs.djangoproject.com/en/dev/', 'http://docs.djangoproject.com/en/dev/_objects/'),
+    'django': ('http://docs.djangoproject.com/en/stable/', 'http://docs.djangoproject.com/en/stable/_objects/'),
     'requests': ('http://docs.python-requests.org/en/latest/', None),
 }
 

docs/contributing.rst

@@ -31,7 +31,9 @@ Pull requests are always welcome to fix bugs and improve support for Mandrill an
 * By submitting a pull request, you're agreeing to release your changes under under
   the same BSD license as the rest of this project.
 
-.. _Django coding style: https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/coding-style/
+.. Intentionally point to Django dev branch for coding docs (rather than Django stable):
+.. _Django coding style:
+    https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/coding-style/
 
 
 Testing

docs/usage/multiple_backends.rst

@@ -34,4 +34,5 @@ and in the constructor for an
 
 (See the `django.utils.log.AdminEmailHandler`_ docs for more information on Django's admin error logging.)
 
-.. _django.utils.log.AdminEmailHandler: https://docs.djangoproject.com/en/dev/topics/logging/#django.utils.log.AdminEmailHandler
+.. _django.utils.log.AdminEmailHandler:
+    https://docs.djangoproject.com/en/stable/topics/logging/#django.utils.log.AdminEmailHandler

docs/usage/webhooks.rst

@@ -153,7 +153,7 @@ Djrill will invoke your signal handler once for each event in the batch.
 The available fields in the `data` param are described in Mandrill's documentation:
 `sent-message webhooks`_ and `inbound webhooks`_.
 
-.. _Django signal: https://docs.djangoproject.com/en/dev/topics/signals/
+.. _Django signal: https://docs.djangoproject.com/en/stable/topics/signals/
 .. _inbound webhooks:
     http://help.mandrill.com/entries/22092308-What-is-the-format-of-inbound-email-webhooks-
 .. _sent-message webhooks: http://help.mandrill.com/entries/21738186-Introduction-to-Webhooks