Removed unnecessary __init__.py file.
Wrote script to flip pairs of values (e.g. to flip latlong values to longlat in Mongo records).

Also used the script to flip the latlong values in the xdata flickr_paris data.

Finally, the flickr app's references to this data field have also been flipped
(so that Paris landmarks are not suddenly transported to the ocean off the coast
of Africa).
Merge branch 'issue-77'

Closes #77