Features:
* Run a Flickr public feed search filtered by tags, and view each photo in full screen
* Search results are sorted by upload date, descending order
* Swipe down on list of search results to refresh the search
* Click on a thumbnail image to view its larger version on a new page
Users can now swipe down on list of search results to refresh
Full image page features image title instead of image author
Fixed keyboard not hiding when app starts up