use java.net.URI to validate and parse a URL   - make isWpullCrawlRunning() work again (this had to be adjusted since domains= is not anymore used in the wpull call)
use java.net.URI to validate and parse a URL
  - make isWpullCrawlRunning() work again (this had to be adjusted since domains= is not anymore used in the wpull call)

jschnasse/regal-api,jschnasse/regal-api,edoweb/regal-api,edoweb/regal-api,edoweb/regal-api,jschnasse/regal-api,edoweb/regal-api,jschnasse/regal-api