Guardian Film awards voting page

Voting completed on the first Guardian Film Awards on 16th February 2014,
so we can now retire this page:

https://profile.theguardian.com/film-awards/1657876-tOfqZ3Kxj2

There are few links to this page I've asked Central Production to remove:

* 'Vote Now' nav trailblock: http://www.theguardian.com/guardian-film-awards
* http://www.theguardian.com/guardian-film-awards/vote-now
Extend id-profile-navigation switch indefinitely

Feels like it's probably reasonable to have this switch, in case Identity
ever went down.
Remove film-awards banner styles

There are still some common 'formstack' styles that are used by the
Ethical Awards, they must remain for now.
Merge pull request #3693 from guardian/remove-film-awards

Remove Guardian Film awards voting page