- Replaced SkillData.getInstance().getSkill with SkillHolder DTO;
- Replaced Skill versions of doCast and doSimultaneousCast with
SkillHolder ones;
- Fixed typo on Sanctum of the Lords of Dawn instance zone;
- Some cleanup.

-- Fixed License in file (L2J Server by L2J DataPack)
-- Removed QuestState import, not's needed
-- Added a minimal description of script
-- Fixed spawns of NPC to retail values. Added missing spawn in Heine.
Thanks to @maneco2 for coordinates
-- Added comments where appropriate
-- Removed ANTHARAS array and his "for each" loop. Thanks to @maneco2
for his comment at respect.
-- Moved SPAM array
-- Edited onFirstTalk() method
-- Removed check condition in onFirstTalk() method

Reported By: @Sdw, @maneco2
Patch By: @Sacrifice
Tested By: @Sacrifice

This commit implements the Nevits Herald npc. It gives the Nevits
Hourglass buff to players.

Patch By: @Sacrifice
Tested By: @Sacrifice