fix icons on status messages

src/static/shared.css

@@ -85,18 +85,18 @@ ul.messagelist li {
     font-size: 13px;
     padding: 10px 10px 10px 65px;
     margin: 0 0 10px 0;
-    background: #dfd url(../img/icon-yes.svg) 40px 12px no-repeat;
+    background: #dfd url(/media/admin/img/icon-yes.svg) 40px 12px no-repeat;
     background-size: 16px auto;
     color: #333;
 }
 
 ul.messagelist li.warning {
-    background: #ffc url(../img/icon-alert.svg) 40px 14px no-repeat;
+    background: #ffc url(/media/admin/img/icon-alert.svg) 40px 14px no-repeat;
     background-size: 14px auto;
 }
 
 ul.messagelist li.error {
-    background: #ffefef url(../img/icon-no.svg) 40px 12px no-repeat;
+    background: #ffefef url(/media/admin/img/icon-no.svg) 40px 12px no-repeat;
     background-size: 16px auto;
 }