Subheader - Fixed issue on new header actually scrolls up past the current header

Author: kevzlou7979

src/main/resources/gwt/material/design/addins/client/subheader/resources/css/subheader.css

@@ -27,5 +27,5 @@
     top: 0;
     min-height: 5px;
     width: 100%;
-    z-index: 995;
+    z-index: 996;
 }