Thalore exp penalty reduced to 20%

Thalore's Nature's Pride buffed: cooldown reduction more effective, treants last 8 turns, gain resist all equal to the user's blight resistance, gain more accuracy, can taunt and get talent levels equel to the Nature's Pride talent level


git-svn-id: http://svn.net-core.org/repos/t-engine4@5879 51575b47-30f0-44d4-a5cc-537603b46e54