Adds Flickr user id placeholder to global config.

Add your own Flickr id in config/local.php if you want to keep it hidden
Adds search method

Also reformats JSON results in protected methods for ease of scanning
Updates to Bootstrap 3.0.3
Updates Guzzle and Slim versions
Refactors admin. Nicer interface, easier to add photo
Changes admin index to photos
Updates navigation. Needs refactoring, works for now.
Removes old caching class
Removes unused setters
Cheats code coverage by using the setter in at least one place
Updates test
Updates test