Settings: Add function to get cached value
Settings: Add function to get cached value

Make it easy to get the value of a specific
setting.

Also change the caching behavior slightly so
that the cache returns stale values if it is
not valid instead of nothing at all.

secret-project/circle-blvd,secret-project/circle-blvd,holmwell/circle-blvd,holmwell/circle-blvd,holmwell/circle-blvd,holmwell/circle-blvd,secret-project/circle-blvd,secret-project/circle-blvd