Merge pull request #332 from gergnz/master

Add 2 new talks from Sean and David.
New BBQ sponsor
Merge pull request #333 from awolfs/master

New BBQ sponsor
remove the avatar hotel to push the hyatt hotel
added citrix & pagerduty as sponsors
citrix as host instead of venue
Added Keynotes MV 2013
remove happy hour sponsor
updated homepage MV 2013
Riverbed & electriccloud sponsor MV 2013
missing comma - damn
Berlin: update program, there is no breakfast but coffee and cookies :)
Merge pull request #334 from IngmarKrusch/master

Berlin: update program, there is no breakfast but coffee and cookies :)
updated stormpath logo
new talk from Luke Chadwick
add new ignite talks from Jonathan Thorpe
Merge remote-tracking branch 'upstream/master'