remove use of DEFAULT_FIELD_OPTIONS, which has been removed on rails4
remove use of DEFAULT_FIELD_OPTIONS, which has been removed on rails4

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