def template_path(key, partial_root)
      path = key.split(".")
      path.delete_at(0) if path[0] == "activity"
      path.unshift partial_root
      path.join("/")
    end
def template_path(key, partial_root)
      path = key.split(".")
      path.delete_at(0) if path[0] == "activity"
      path.unshift partial_root
      path.join("/")
    end
Builds the path to template based on activity key