added Geek Feminism anti-harassment code of conduct template
added Stumptown Syndicate's Citizen Code of Conduct template
added Plone Foundation's organizational anti-harassment/anti-bullying code of conduct
added PloneConf anti-harassment/anti-bullying code of conduct
added Plone Symposium Midwest anti-harassment/anti-bullying code of conduct
added RubyConf 2013 short & long versions of code of conduct