[Web] Added missing spacing between flag icon and text

Signed-off-by: Kristian Feldsam <feldsam@gmail.com>

data/web/css/build/008-mailcow.css

@@ -247,3 +247,6 @@ code {
 .bootstrap-select.btn-group.show-tick .dropdown-menu li.selected a span.check-mark {
   margin-top: 0px;
 }
+.flag-icon {
+  margin-right: 5px;
+}