Merge pull request #520 from redapple/startupinfo

Promote startup info on settings and middleware to INFO level
Changed TOR Info as previous was removed from www.mininova.org
fixed error on tor's name
Merge pull request #527 from ferdyrod/master

Torrent url in the "Scrapy at a glance" doc was removed
Register EXSLT namespaces by default (resolves #470)
Applying suggestions from previous comments
Update selectors documentation and tests