2015-05-10
* added postgres_db and postgres_role items
* added `bw verify --only-needs-fixing`
* added `bw verify --summary`
* added `Repository.nodes_in_group()`
* added `verify_with` attribute for file items
* libs now have access to `repo_path`
* user items: fixed asking for password hash change
* file items: fixed `bw items -w` with `content_type: 'any'`
* improved various error messages