Film Awards - banner on container page [#IDN-1693]

https://jira.gutools.co.uk/browse/IDN-1693

This adds a [banner image](https://static-secure.guim.co.uk/sys-images/Guardian/Pix/pictures/2014/1/15/1389783803763/film-awards-banner.png) to the Film Awards container page, which is launching tomorrow (requires you to be signed-in):

https://profile.code.dev-theguardian.com/film-awards/1657876-tOfqZ3Kxj2
https://profile.theguardian.com/film-awards/1657876-tOfqZ3Kxj2

The banner will be much like the Ethical Awards banner, visible here:

https://profile.theguardian.com/film-awards/1657876-tOfqZ3Kxj2