add creator id for sites

Signed-off-by: Hake Huang <hakehuang@gmail.com>
add tags model and controller, with will_pate and best_in_palce support

Signed-off-by: Hake Huang <hakehuang@gmail.com>
install the willpage to local gems folder

Signed-off-by: Hake Huang <hakehuang@gmail.com>