[1.9.x] Fixed Sphinx highlight warnings in docs.

Backport of 9c43d8252a926f72be5a279186b42848501819b8 from master

docs/topics/i18n/translation.txt

@@ -70,8 +70,6 @@ as a shorter alias, ``_``, to save typing.
        global ``_()`` function causes interference. Explicitly importing
        ``ugettext()`` as ``_()`` avoids this problem.
 
-.. highlightlang:: python
-
 In this example, the text ``"Welcome to my site."`` is marked as a translation
 string::
 
@@ -1213,6 +1211,8 @@ Additionally, if there are complex rules around pluralization, the catalog view
 will render a conditional expression. This will evaluate to either a ``true``
 (should pluralize) or ``false`` (should **not** pluralize) value.
 
+.. highlight:: python
+
 The ``json_catalog`` view
 -------------------------
 
@@ -1247,7 +1247,8 @@ The view is hooked up to your application and configured in the same fashion as
 
 The response format is as follows:
 
-.. code-block:: json
+.. code-block:: text
+..   JSON doesn't allow comments so highlighting as JSON won't work here.
 
     {
         "catalog": {
@@ -1270,9 +1271,7 @@ Server-side caching will reduce CPU load. It's easily implemented with the
 :func:`~django.views.decorators.cache.cache_page` decorator. To trigger cache
 invalidation when your translations change, provide a version-dependent key
 prefix, as shown in the example below, or map the view at a version-dependent
-URL.
-
-.. code-block:: python
+URL::
 
     from django.views.decorators.cache import cache_page
     from django.views.i18n import javascript_catalog
@@ -1286,9 +1285,7 @@ Client-side caching will save bandwidth and make your site load faster. If
 you're using ETags (:setting:`USE_ETAGS = True <USE_ETAGS>`), you're already
 covered. Otherwise, you can apply :ref:`conditional decorators
 <conditional-decorators>`. In the following example, the cache is invalidated
-whenever you restart your application server.
-
-.. code-block:: python
+whenever you restart your application server::
 
     from django.utils import timezone
     from django.views.decorators.http import last_modified
@@ -1370,8 +1367,8 @@ After defining these URL patterns, Django will automatically add the
 language prefix to the URL patterns that were added by the ``i18n_patterns``
 function. Example::
 
-    from django.core.urlresolvers import reverse
-    from django.utils.translation import activate
+    >>> from django.core.urlresolvers import reverse
+    >>> from django.utils.translation import activate
 
     >>> activate('en')
     >>> reverse('sitemap-xml')
@@ -1428,8 +1425,8 @@ After you've created the translations, the
 :func:`~django.core.urlresolvers.reverse` function will return the URL in the
 active language. Example::
 
-    from django.core.urlresolvers import reverse
-    from django.utils.translation import activate
+    >>> from django.core.urlresolvers import reverse
+    >>> from django.utils.translation import activate
 
     >>> activate('en')
     >>> reverse('news:category', kwargs={'slug': 'recent'})
@@ -1727,8 +1724,6 @@ translation utilities with a ``gettext`` package if the command ``xgettext
 Customizing the ``makemessages`` command
 ----------------------------------------
 
-.. highlightlang:: python
-
 If you want to pass additional parameters to ``xgettext``, you need to create a
 custom :djadmin:`makemessages` command and override its ``xgettext_options``
 attribute::
@@ -1767,8 +1762,6 @@ Miscellaneous
 The ``set_language`` redirect view
 ----------------------------------
 
-.. highlightlang:: python
-
 .. currentmodule:: django.views.i18n
 
 .. function:: set_language(request)

docs/topics/security.txt

@@ -29,7 +29,8 @@ which are particularly dangerous to HTML. While this protects users from most
 malicious input, it is not entirely foolproof. For example, it will not
 protect the following:
 
-.. code-block:: html+django
+.. code-block:: text
+..   highlighting as html+django fails due to intentionally missing quotes.
 
     <style class={{ var }}>...</style>