Bump version

Merge branch '212-module-import-error'

Fix queue tests

Namespace Redis keys to avoid conflicts between instances

The `ckan.site_id` config option (or `default` if missing) is used to
namespace the Redis keys: routing key and persistance key. Consumers
will only get the relevant keys for their instance.

Merge branch 'db-error'

Tag CKAN 1.6 compatible version