Tweak to add support for load balanced set ups

Added support for load balancers that send along `https` status via the `HTTP_X_FORWARDED_PROTO` header
@see http://en.wikipedia.org/wiki/List_of_HTTP_header_fields#Common_non-standard_request_headers
Merge pull request #9 from onassar/patch-1

Tweak to add support for load balanced set ups
sample/PhotoAlbum - fix parsing for cloudinary created_at (ISO-8601)
php framework - Use DIRECTORY_SEPARATOR
PhotoAlbum (non cake) - use cloudinary_js_config
cake - Add just baked PhotoAlbumCake app and CloudinaryCake plugin
[WIP-NEEDED?] src/Uploader - PreloadedFile - support assoc array as initializer
php framework - cloudinary_url supports cloudinary identifier as source
php framework - add extended_identifier to PreloadedFile
cake_plugin - add CloudinaryBehavior
cake_plugin - CloudinaryBehavior change model's defaults

in order for Model::create() to return a CloudinaryField in apropriate fields

Note: Uses some monkey patching evil!
cake_plugin - use extended_identifier (from future 1.0.8) php framework
cake_plugin - add CloudinaryHelper
CloudinaryField - move from cake_plugin to src
PhotoAlbumCake - Setup private config
PhotoAlbumCake - bake all photo
PhotoAlbumCake - Add Cloudinary support to photo admin actions