Rework for Natural Talent and Vampirism.

For the longest time now I've felt like these 2 masteries out of all of the other masteries in the game were just out of place. The reason why that I thought this is because while it did offer useful stats, the amount it offered was always was too small.

When choosing masteries it's feels like these 2 are literally nothing more than something you have to pick to go further down the tree and which one you pick is simply based on if you can use the stats or not.

You would choose vampirism if you would be auto attacking alot or you would choose Natural talent if won't be auto attack but either way these masteries never made a huge difference in my opinion.

First I think Vampirism should be changed into a normal onmivamp like Hextech Gunblade and be increased to 4% healing.

Natural talent I think should be split into 2 separate masteries, 1 for ad and 1 for ap, then they should be changed into a mastery that has a really good per level scaling or should be changed to a flat stat mastery for early game.