Elastic: Support messages of type chat notice (or any subtype notices)

skins/elastic/styles/widgets/messages.less

@@ -210,6 +210,10 @@
         & > i.icon:before {
             color: #fff;
         }
+
+        &.chat > i.icon:before {
+            content: @fa-var-comment;
+        }
     }
 
     .alert-success {

skins/elastic/ui.js

@@ -1678,6 +1678,9 @@ function rcube_elastic_ui()
                 vcardattachment: 'alert-info' /* vcard_attachments plugin */
             };
 
+        // Type can be e.g. 'notice chat'
+        type = type.split(' ')[0];
+
         if (wrap && addicon && !$(object).is('.aligned-buttons')) {
             // we need the content to be non-text node for best alignment
             tmp = $(object).html();