Show possible next steps on detail pages

Summary
=======
When viewing the details of a resource in the dashboard the user can be presented with a group of "next steps." These would be actions that the user might want to perform on the resource but they would be presented with a description that explains why the user would take that action and they would be rendered as a group of tiles.

Motivation
========
Let's use the Load Balancers panel as an example. After creating a new load balancer the user is taken to the detail page. Now what? Should they assign a floating IP address? Create another listener? Do they want to use L7 policies and create another pool? This can be very confusing and likely force users to search for some documentation. It would be nice to have these actions explained to the user right on the detail page so they can decide what next step they might want to take.

Description
=========
Angular actions can currently be rendered as either "row" or "batch" actions. This would introduce a third way to render them, probably "detail." The actions being rendered as "detail" actions should each have a title and description property:

{
    service: createListener,
    template: {
        text: gettext('Create Listener'),
        title: gettext('Add another listener'),
        description: gettext('Create another listener to apply load balancing on a different port.')
    }
}

The title and description would be used to render the action as a tile (probably a bootstrap panel).

Example:
http://pasteboard.co/2NFG7Sof.png

UX
===
The design of the action "tiles" comes from similar features found in other products and should be somewhat generic enough that they can be themed without issue. Likely a bootstrap panel would be used.

Testing
======
Yes, there will be jasmine tests to test the new way of rendering actions. Nothing special here.

Outside Dependencies
==================
None

Requirements Update Required
========================
None

Doc Impact
=========
None