Update messages_es.properties (grammatical correction)

Changed 'playerJailedFor' and 'playerKicked' messages.
In Spanish, for can be translated as 'durante' and 'por', but in this case de correctly is 'por'
Pong: is 'pong' too.. but however :'D

And Years is 'Años' whit Ñ... &ntilde; or... I don't know how write it in .properties, and I I removed accidentally D: