Finish ability to add, edit, and manage photos...

* Add photo_group enum on photo model for gallery display and filtering.
* Use fancybox2 gem for lightbox capabilities on photo gallery.
* Create new main photo gallery with thumbnails and group displays.
* Add some custom js and style for photo gallery display.
* Fix update issue on photo and user where changes would not be saved.
* Add helpers for reading the enum and getting back human friendly result.
* Add size styles on photo model for paperclip.
* Slight style updates on photo show and edit views.
* Delete unneeded routes for old photo views.
* Migration to add photo_group to photo.
* Update tests for devise and photo gallery.