Restyle dashboard

* Re-skin of the dashboard home page.
* Ensure the graph on the home page dashboard shows only 12 segments on the x-axis and not 24.
* Add auto refresh of 5mins to dashboard index

Fixes 366

Author: OliverRandell

db.sqlite

@@ -84,8 +84,8 @@ def get_hourly_report(self, hours=24, segments=10):
         orders_last_day = Order.objects.filter(date_placed__gt=start_time)
 
         order_total_hourly = []
-        for hour in range(0, hours):
-            end_time = start_time + timedelta(hours=1)
+        for hour in range(0, hours, 2):
+            end_time = start_time + timedelta(hours=2)
             hourly_orders = orders_last_day.filter(date_placed__gt=start_time,
                                                    date_placed__lt=end_time)
             total = hourly_orders.aggregate(

oscar/apps/dashboard/views.py

@@ -390,6 +390,7 @@
   .nav > li > a {
     color: @navbarInverseLinkColor;
     text-shadow: 0 -1px 0 rgba(0,0,0,.25);
+    background: red;
     &:hover {
       color: @navbarInverseLinkColorHover;
     }