AI improvements.

Patch by: @St3eT
Reviewed by: @Zoey76
Quest Pavel's Last Research (120) in Java.

Patch by: @jurchiks
Reviewed by: @Pandragon, @Zoey76
DataPack for Core
L2J/L2J_Server@066ce70b2ebf1dea87c8c07f71021cf94afa822e
Merge remote-tracking branch 'origin/master' into ertheia