Add real values

Updates the order index view to use actual variables for showing
the scoreboard items, rather than hard-coded numbers. Still got to
clean a lot of that controller cruft though.
Fix positive/negative values

The positive/negative class for scoreboard items was still hard coded,
so this adds a little helper method to the controller so the class
can be detected and passed through to the view.
Cleanup order controller

Creates a couple query scopes in the Order model so we can strip all
the carbon bits out of the controller
Merge branch 'feature/add-order-scoreboards' into develop
Add images. Yeah, I know. Lazy commit msg.

Basically adds all the stuff for product images in the plugin. Removes
the old product container class, instead using the row class that's also
used on other components. Adds a few new properties for image sizes and
classes as well.

Also adds the necessary stuff to get the uploader running in the backend
product editor and tweaks the component view to display mutiple images.