Improve unit visuals

app/assets/stylesheets/statistics.css.scss

@@ -89,6 +89,10 @@ div.negative-result {
         font-size: 40px;
         vertical-align: middle;
         line-height: 50px;
+
+        > .unit {
+          font-size: 20px;
+        }
       }
 
       > .title {

app/views/statistics/show.html.slim

@@ -7,4 +7,6 @@
         a href=entry[:url]
           div data-key=entry[:key]
             .title = entry[:name]
-            .data = entry[:data].to_s + (entry[:unit] or '')
+            .data
+              span = entry[:data].to_s
+              span.unit = entry[:unit] if entry.key? :unit