update sponsors for atlanta 2013
Added three proposals from Seth Vargo
Added additional talk on Eucalyptus and jenkins
Two more submissions
Merge pull request #388 from uric/master

Two more submissions
Change layout of major pages
Merge pull request #386 from parkerd/newsponsor

update sponsors for atlanta 2013
Merge pull request #387 from johntdyer/master

Added 3 more proposals
Merge pull request #389 from uric/master

Change layout of major pages
Added arrival and parking details
Merge pull request #390 from uric/master

Added arrival and parking details
Add sponsors
Merge pull request #391 from uric/master

Add sponsors