Make pages look the same

- Make manuals index look the same as documents index
- Move actions to the bottom of pages
- Make form actions a button, use links for navigation.
- Positive actions (add attachment, save draft) should all be green buttons
- Add manual.document.body visible on manual.document.show pages

Manuals index before:
![screen shot 2014-06-24 at 15 18 19](https://cloud.githubusercontent.com/assets/68009/3372367/7d012ba2-fbaa-11e3-84fb-5ba013d82728.png)
After: 
![screen shot 2014-06-24 at 15 18 31](https://cloud.githubusercontent.com/assets/68009/3372373/82ea58e0-fbaa-11e3-8081-434b690ee1fb.png)

Manuals show before:
![screen shot 2014-06-24 at 15 19 25](https://cloud.githubusercontent.com/assets/68009/3372389/a37b41c8-fbaa-11e3-95f4-12d5cfc1c8bd.png)
manuals show after:
![screen shot 2014-06-24 at 15 19 39](https://cloud.githubusercontent.com/assets/68009/3372395/a98739b4-fbaa-11e3-861c-3b3800edeb59.png)

Section show before:
![screen shot 2014-06-24 at 15 23 05](https://cloud.githubusercontent.com/assets/68009/3372440/16c61324-fbab-11e3-9223-b056e2111ea6.png)

Section show after:
![screen shot 2014-06-24 at 15 22 48](https://cloud.githubusercontent.com/assets/68009/3372442/1e80dfea-fbab-11e3-8706-6b2dccf8023d.png)

Add attachment before: 
![screen shot 2014-06-24 at 15 21 37](https://cloud.githubusercontent.com/assets/68009/3372444/28f6c278-fbab-11e3-8751-aaa7603eb4c2.png)

Add attachment after:
![screen shot 2014-06-24 at 15 21 42](https://cloud.githubusercontent.com/assets/68009/3372446/30d43962-fbab-11e3-9d18-c4b0f5ba2acd.png)

This is very similar to `document_state` defined above. I think you could probably get away with using the same method if you added this to `app/models/manual.rb`:

```ruby
def draft?
  @state == "draft"
end
```