Fixed error on which a return was not always of the same type.
Fixed error on which the rank in the list was computed incorrectly.
Improved language, and fixed error on pagination.
Documented the ordering on a calculation.
Substituted old function by new API. Added natural order to contracts.
Decreased font size of summary title.
Corrected spell mistake.
Minor simplifications to the rank page.
Fixed error on graph that forbid the last bar to be shown.
Added cache of rank template. Other minor cleanups.
Added sbout page.
Added more documentation to example.
Simplified summary html.
Added statistics to JSON format, and import them on the template.

Added statistics in the main page.
Small improvement to text in crawler documentation.