Fix the layout of deployment design page

The deployment design page had a number of problems with
layout with the new Horizon styles: the action buttons
touched the top of the tabs, the content of the tabs
was shifted below the sidebar.

Change-Id: Ic9d133c317ac83c49b2874a4b26a047b99e394c8
Refresh the deployment progress page every 30s

This is a poor man's solution for updating the progress bar,
status of the nodes and logs during the deployment.
Later we will replace it with a fancy ajax-based approach.
This one has the advantage that it doesn't even require
JavaScript to work.

Change-Id: I22f232d505fde884d667cf99e35a761b231f002e
Merge "Fix the layout of deployment design page"