Add extlinks entry to reference forum topics

Allow adding links to forum topics with ease in the
documentation.

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

HISTORY.rst

@@ -9,7 +9,7 @@
   file_metadata app.
 * Add internal_name field to workflow serializer. 
   Fixes workflow API creation view.
-* Fix document cabinet list view. Thanks for forum user
+* Fix document cabinet list API view. Thanks for forum user
   "jere" for the report. Forum topic 1039.
 
 3.2.6 (2019-07-10)

docs/conf.py

@@ -242,6 +242,9 @@ extlinks = {
             mayan.__django_version__
         ), 'Django documentation section: '
     ),
+    'forum-topic': (
+        'https://forum.mayan-edms.com/viewtopic.php?t=%s', 'Forum topic #'
+    ),
     'github-issue': (
         'https://github.com/mayan-edms/mayan-edms/issues/%s', 'GitHub issue #'
     ),

docs/releases/3.2.7.rst

@@ -16,7 +16,7 @@ Changes
   file_metadata app.
 - Add internal_name field to workflow serializer.
   Fixes workflow API creation view.
-- Fix document cabinet list view. Thanks for forum user
+- Fix document cabinet list API view. Thanks for forum user
   "jere" for the report. Forum topic 1039.
 
 Removals
@@ -111,5 +111,6 @@ Bugs fixed or issues closed
 ---------------------------
 
 - :gitlab-issue:`654` Internal Server Error, Document Checkout
+- :forum-topic:`1039` Re: /api/documents/{id}/cabinets returns 500
 
 .. _PyPI: https://pypi.python.org/pypi/mayan-edms/