Making TK/Alche/Smith ranking points decay

[GM-Ayu]

Or think about it this way: the fact that the current top smith and alchemist aren't players starting from day one is pretty indicative how hard work, once again, overcomes time. Rennay is an old player but his name was never on the list until 2009 suddenly he pops up. Marivel's old chemist held the first spot for a very long time at a staggering 5 digit number when a year ago, the 2nd place is at maybe 2000. Now everyone moved up a lot closer and some people owns 2 ranking alchemist.