rune skill loading broken into static method in NPCManager

src/engine/objects/CharacterSkill.java

@@ -258,7 +258,7 @@ public class CharacterSkill extends AbstractGameObject {
         this.skillType = CharacterSkills.GetCharacterSkillByToken(this.skillsBase.getToken());
     }
 
-    public CharacterSkill(SkillsBase sb, Mob mob, int trains) {
+    public CharacterSkill(SkillsBase sb, AbstractCharacter mob, int trains) {
         super();
         this.skillsBase = sb;
         this.numTrains.set(trains);