Spidercrab

Finished synchronized database news fetchers (Spidercrab), that includes:
1. News fetchers as *graph workers* that can work in a *distributed way*, that is in a master-slave communication model slave workers can work from anywhere (remotely) for one master that is managing a task list through the database (node relations). Every single worker can derive configuration from database or set its own config locally.
2. News text content extraction based on *boilerpipe*. *In future: image extraction*.
3. RSS feeds parsing in all popular versions (RSS 0.9x, RSS 1.0, RSS 2.0, *and in future: CDF, Atom 0.3, and Atom 1.0 feeds*)