fix exception in new and create if nested action is excluded
fix exception in new and create if nested action is excluded

AlbertoBarrago/active_scaffold,activescaffold/active_scaffold,mallikarjunayaddala/active_scaffold,AlbertoBarrago/active_scaffold,budree/active_scaffold,mallikarjunayaddala/active_scaffold,AlbertoBarrago/active_scaffold,budree/active_scaffold,activescaffold/active_scaffold,budree/active_scaffold,mallikarjunayaddala/active_scaffold,activescaffold/active_scaffold