Add styling
Render real metadata for documents
Favour markup over tag helpers

It makes it easier to work out what is going on.
Use assets group for asset gems

So we don't need to include the gems in production
Remove commented out code
Bump toolkit for standard gutters

The new toolkit has standard gutter variables included.

- Remove gem.fury as it isn't needed
- Make sass includes simpler as partials imply underscores and
  extensions aren't needed
Only include the application helper by default

If we need other helpers they can be included when needed. This will
stop methods from being their 'magically'
Remove nbsp as not needed and looks odd on mobile