Pictures and scenario submissions for Dr. Scenario

Dr. Scenario teaches health to youth through a series of scenarios. I've added new tasks asking for submissions of new pictures and scenarios. Currently we have about half the scenarios necessary for a v.1.0 release. Almost all of the pictures will need to be replaced with open-source friendly content (e.g. Creative Commons Attribution and Attribution-ShareAlike). Please consider finding appropriate images or submitting new scenarios to help teach teens how to face health-related dilemmas.