completes backbone photo index view
creates photo upload form and adds exifr gem
adds jquery file upload plugin
fixes file upload bug in backbone form
updates photo model and controller to pull exif data from img
adds fileupload to upload form view initializer
captures image upload and new photo object
updates file upload ajax request and upload form
updates upload form view path logic
adds main photo view to show view
creates comments model/collection and comments view
commit before beginning nested comments associations
updates as_json to include comments and comments by parent id