mongodb client minor fix
adding INRIAPerson to config.json.example
Adding API key fields to config json.
Adding new UI, for viewing the Pinterest data.
Goal is for this UI to replace the old one.
new UI updated with filtering by query and pagination
Added links to pin, board, and user.
new ui wrapped up for today
displaying variable number of pins per user
another small todo in ui/app.py
Fixing config dict paths
Merge branch 'dev' of github.com:sergeyk/vislab into dev
Breakin' the law...
Adding code to pull in flickr "interesting" examples for the negative train/test sets

- storing new images as a new style tag called "Interesting" to differentiate interestingness images for the negative set
- created `get_photos_for_interesting()` method to pull those images down
  similar to `get_photos_for_style()` but works backwards through days until it collects sufficient images
- modifying `style_names` and `load_flickr_df()` to correctly return these additional results