Deployments page

First go at the deployments page. I'm looking to finish off this feature by tomorrow. Especially I want feedback on the `dangerouslySetInnerHTML` attribute and the ownership of the two functions: `formatCurrentActions` and `formatAffectedApps`.
If `this.props.className` is undefined, the DOM ends up getting the class name "undefined nav nav-tabs".

Since className is optional, you can add a default empty string for it in `getDefaultProps`.