message: make raw_message available in the conversation context
  for use in makign replies for teams
diff: @@ -159,8 +159,8 @@ module.exports = function(controller) {
  text: input_text,
  user: user,
  channel: channel,
  + raw_message: original_message ? original_message.raw_message || null,
  original_message: original_message || null
  -
  };
  return new Promise(function(resolve, reject) {
  controller.studio.getScript(bot, input_text, user).then(function(command) {
  