Merge pull request #191 from jbraeuer/master

Berlin 2013: 1 more proposal.
Ansible works Silver MV 2013
add talk from Peter Leschev
add octopus as Bronze sponsor
Merge pull request #192 from gergnz/master

new talk proposal and another bronze sponsor for downunder 2013
Update index.txt
Duplicate blog entry
amazon web services will sponsor and not amazon
Merge pull request #193 from drozer/master

amazon web services is sponsor and not amazon
Berin 2013: Remove withdrawn proposal.
Berlin 2013: Proposal from Jan Burkl.