[1.2.X] Fixed #12803 - Added styling for 'error' and 'warning' messages in admin.

Thanks to bboli and sebastian_noack for the report, DrMeers for the patch.

Backport of [13393] from trunk.  Considered a bug (and therefore backported)
due to error and warning messages being styled with green tick previously.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@13394 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/admin/media/css/base.css

@@ -445,6 +445,14 @@ ul.messagelist li {
     background: #ffc url(../img/admin/icon_success.gif) 5px .3em no-repeat;
 }
 
+ul.messagelist li.warning{
+    background-image: url(../img/admin/icon_alert.gif);
+}
+
+ul.messagelist li.error{
+    background-image: url(../img/admin/icon_error.gif);
+}
+
 .errornote {
     font-size: 12px !important;
     display: block;

django/contrib/admin/templates/admin/base.html

@@ -56,7 +56,9 @@
     {% endif %}
 
         {% if messages %}
-        <ul class="messagelist">{% for message in messages %}<li>{{ message }}</li>{% endfor %}</ul>
+        <ul class="messagelist">{% for message in messages %}
+          <li{% if message.tags %} class="{{ message.tags }}"{% endif %}>{{ message }}</li>
+	{% endfor %}</ul>
         {% endif %}
 
     <!-- Content -->