Add announcement image and class

css/helios.css

@@ -379,6 +379,9 @@ i {
     vertical-align: text-top;
 }
 
+.tool_container .pane .nav-pills i.announcement {
+    background-image: url('../images/announcement.png');
+}
 .tool_container .pane .nav-pills i.class {
     background-image: url('../images/class.png');
 }
@@ -851,4 +854,4 @@ i {
     margin: 0;
     padding: 0;
     border: 0;
-}
+}