when dropping knowledge, respond in the room that asked for culture

Summary:
updates culture.js to use robot.fancyMessage and drops the genesis
device in whatever room explicitly said "culture us" rather than in 1s&0s
all the time which is what happens if you currently ask the cow for culture
during a weekly 1-1

Test Plan: moooooo (actually, any advice here would be welcome)

Reviewers: ben

Reviewed By: ben

Differential Revision: http://phabricator.khanacademy.org/D14584