Rental unit views tidied up.

- Tidy up overall grid/layout, including navigation. Preferring fixed grid with .container and .row-fluid wrapper for content, as needed.
- Tidy up styling for all rental views, including phone and tablet views
- Things learned:
-- Bootstrap scaffolding and base CSS, and how they change with responsive
CSS
-- Jade and styl files modification, as well as how it interacts with the AngularJS parts of the code.
-- Making things responsive while shifting around some bits of AngularJS code