French translation and some adds in properties of game info

Hi,
I have added a french translation to wgo.js.
I have found an issue in translation when no player name are specified by the SGF: it displays Black/White whatever the language you have specified. My second commit is a fix for this issue.
In the third commit, I add more properties to be displayed correctly (with a understandable name) for the game info.
However I am not able to do the translation in Italian nor in Czech. So these languages have not been updated for most properties.

Minified files have not been updated.

Regards,
Benoit