Stat damage bonuses

[Raider]

We know that Str above/below 20 gives some % damage bonus/penalty to autoattacks (and some skils that depend on autoattacks)
Same with int/wis for spells/empowers.
But we dont know how much.
Plus it does not affect healing/buffs/debuffs and half of the skills.

The idea:
convert these percentages to dr+hr/spellpower. That way the effect is no longer hidden and it affects everything related.

For example:
17 str = -10dr/hr
25 str = +15 dr/hr (on top of current bonus)

15 int = -3 spellpower
25 int = +4 spellpower