fixed a typing error. value.id -> value._id at each function in update_latest_photos.js.
Merge branch 'master' of https://github.com/SungHong-Cho/kidspark
add photo_count on photos/index.html.haml, so change update_latest_photos to update photo_count when javascript receive data object. and modify photos_controller, two dot -> three dot. so concurrency problem is solved.
add explicit warning to a user who want to delete his photo. and tweak style a little.
page per photo 9-> 18