Adds a Panoramio class

Easy querying to get panoramio images for a given bounds. Returns
attributes suitable for an Image model.
Removes unnecessary logging from Panoramio
Adds an Image model for handling PA Images relations

Currently uses Panoramio to retrieve image URLs and store them
Creates has_many relation for Images on PA
Panoramio API pulls square images for thumbnails
Adds a details URL to the Image model

Allows click through to panoramio, etc.
Panoramio photos are now rendered on the PA show page
Makes panoramio photo display slightly less terrible
Merge pull request #6 from unepwcmc/pa-images

Panoramio PA Images