Updated Play Akka settings to default for Async apps.
Nextgen now lists all content.

We do not just list content that we support.

Of course unsupported content will still render on the desktop site.
Merge pull request #1816 from guardian/all-content

Nextgen now lists all content.
Merge pull request #1804 from guardian/akka-conf

Updated Play Akka settings to default for Async apps.
Merge branch 'master' of github.com:guardian/frontend into bacon