Facia cards 2.0

First container under new container regime:

1. `fc-` prefix keeps new code separate from incumbent containers. adds temporary bloat but means the old stuff can be safely retired at a later date
2. presentation logic has been moved from templates/css into new slice scala modelling 

todo:
- remove old `standard`/`list` templates into single `item` template
- large media list (50% image width)
I’d like to leave it in for now because it was copied in from the current code, but it wasn't clear what it did. ok with you if we remove it later if we don’t find it was doing something crucial we missed?