Deployments ui

Adding deployment status to app modal and app list.

NB: You need the change committed in this PR: https://github.com/mesosphere/marathon/pull/531/commits to run it.
Careful about this: I intentionally reverted this because viewing the "Configuration" tab on a small screen makes it impossible to differentiate `<dt>` elements from `<dd>` elements because they're all the same font-weight.

@aatumanova does this need to go in? Can keys be differentiate another way if not by font-weight?