Move 'upgrade often' nag to the commits widget

app/assets/javascripts/admin/templates/commits.js.handlebars

@@ -1,6 +1,9 @@
 <div class="commits-widget">
   <div class="header" {{action "goToGithub"}}>
-    <h1>{{i18n admin.commits.latest_changes}}</h1>
+    <h1>
+      <i class="icon icon-github"></i>
+      {{i18n admin.commits.latest_changes}} {{i18n admin.dashboard.update_often}}
+    </h1>
   </div>
   <ul class="commits-list">
     {{#each controller}}

app/assets/stylesheets/admin/admin_base.scss

@@ -354,6 +354,12 @@ table {
       font-weight: normal;
       text-align: center;
     }
+    thead {
+      tr:hover > td,
+      tr:hover > th {
+        background-color: $white;
+      }
+    }
 
     td.value {
       font-weight: bold;
@@ -436,7 +442,7 @@ table {
   }
 
   .header:hover h1 {
-    text-decoration: underline;
+    color: $link-color-hover;
   }
 
   .commits-list {

config/locales/client.en.yml

@@ -708,7 +708,7 @@ en:
           30_days_ago: "30 Days Ago"
 
       commits:
-        latest_changes: "Latest changes"
+        latest_changes: "Latest changes."
         by: "by"
 
       flags: