Show stack quantity tooltip for large quantities

When hovering over a quantity in an inventory display, if the
quantity is larger than one stack (i.e., 64 items), display a
tooltip showing the quantity in stacks (plus the remainder).

src/client/site/news_page/news_page.jade

@@ -10,6 +10,19 @@
         .view__adsense
 
     .right
+        section
+            h3 2016-04-24
+            .panel
+                p.
+                    I've been knocking off a few more feature requests over the weekend.  First, I've made the entire
+                    site respond to being on a smaller screen (tablet-sized for now, phone-sized will be next).
+                    Hopefully, it should just feel pretty natural on whatever screen size, and you won't notice any big
+                    differences from one to the other.
+                p.
+                    The second small change is that whenever you're looking at a recipe which calls for a <i>lot</i> of
+                    some item, you can hover over the quantity to see what it would be in stacks + the remainder. For
+                    example, 127 translates to: 1x64+63.  That should make it easier to think about large builds.
+
         section
             h3 2016-04-23
             .panel