Squashed 'includes/libraries/phpflickr/' content from commit 6a6a805

git-subtree-dir: includes/libraries/phpflickr
git-subtree-split: 6a6a805001223f88369fbb8473ce1d4d55f73d8e
Merge commit 'b4edbf774877e7beac3c5ba65fd285f6154cb7bb' as 'includes/libraries/phpflickr'
Update PHP Wrapper for the Flickr API

* Update [PHP Wrapper for the Flickr API](https://github.com/dan-coulter/phpflickr)