Merge pull request #642 from agoddard/portland

replaced Chris F talk with Eric S talk, PDX
Note locations in venue.
Puppet party.
Update run details.
Insert sponsor shoutouts.
Merge pull request #643 from whilp/pdx-program

PDX program tweaks
Whitespace, no-op.
s/01:30/13:30
Fill in open spaces, move closing to 16:00 - 16:30.
Second day open spaces.
Fix anchor.
s/15:10/15:00/
Merge pull request #644 from whilp/pdx-schedule

More program tweaks (PDX)
remove paypal buttons for London
remove devops trivia and make some room for sponsor & Q/A Mark
last second swap.. fml