Overlay scrollbar in webkit browsers

-To prevent scrollbar from offsetting the cells
 those browsers that support overlay scrollbars
 should use it.

Issue: DEB-182

src/main.less

@@ -258,10 +258,17 @@
     .row-wrapper {
       height: calc(~"100% - 97px");
       width: 100%;
-      overflow: scroll;
+      overflow: auto;
       padding: 0;
       margin-top: 0;
     }
+
+    // Use overlay-scrollbars for webkit-browsers
+    @media screen and (-webkit-min-device-pixel-ratio: 0) {
+      .row-wrapper {
+        overflow: overlay;
+      }
+    }
   }
 
   // hide scrollbars