+1 for dashing [1]

While not actively maintained by Shopify anymore it's working really well, has easy setup and allows you to get up and running quickly.

The grid system and basic widgets provide a good and clean starting point, although you probably want to invest some time to make it visually coherent if you're using a large amount of third-party plugins.

Our team is using it for polled data that is updated once an hour up to every minute and it's working great for us.

[1] http://dashing.io