* First working version of gengo crawler that can crawl a german
website and afterwards submit jobs to the gengo website. It is doing the
following:
   1. Receiving the given page
   2. Create a crawl work item for all found links
   3. Download all found links and extract the text by the given css
selector. All html tags are removed
   4. Offer an interface for a human to select the pages including word
counts
   5. Send the pages to gengo