Issues/747 za pmg header

Closes #747 

- All the menu links are absolute urls to the PMG website so that they should work correctly however this page is served.
- The footer has not been styled into the PMG livery.
- The design is mostly responsive - see screenshots below.

On a largish screen:

![search____pombola_south_africa](https://f.cloud.github.com/assets/187630/1015016/08212160-0bce-11e3-9a2e-98188dbb78d4.png)

On a narrow screen. Note that although the menu disappears from the top the main sections remain in the footer.

![search____pombola_south_africa](https://f.cloud.github.com/assets/187630/1015020/26f593dc-0bce-11e3-9cba-17cf1b495a36.png)