Remove Chef CFP, update links

* use getchef.com instead of opscode.com
fix some typos:

* extra space
* extra comma
Update the topic and room for Adam's talk
upcase 'Monday' and 'Tuesday' fix punctuation at end of sentence
Drop-in a schedule placeholder
Merge pull request #38 from nathenharvey/minor_updates

Minor updates
Merge pull request #39 from nathenharvey/chef_schedule

Chef schedule
removed call for papers
Merge pull request #40 from geekygirldawn/master

removed call for papers
Adding Sponsor Logos
Adding more sponsor logos
Added pics + Sponsor logos in the main page
Adding Normation to the sponsor list
Cleaning up arrows
Adding Before and After
Put schedule higher
Added myself to Johan's talk on rspec.
Merge pull request #41 from puppet-be/master

Added myself to Johan's talk on rspec.
made some adjustments to schedules based on feedback during the team meeting
Merge pull request #42 from geekygirldawn/master

made some adjustments to schedules based on feedback during the meeting