Dark-Magic:

	* Adding Dark Magic Skill.
	* Adding spells made by MisterGrey.
	* Balancing MrGrey's spells.
	* Adding an AoE spell.
	* Adjusting Debug-NPC.
	* nerfed light magic for Dark Mages.
	* Dark Magic spells are queststate dependend.
Dark Magic - Quests:

* added Quests for 3 Spells, QuestStates are documented in the NPC script.
Edited the Waric NPC

Spelling, grammar and style edits
Waric NPC script:

* adding a few next.
* adding an option to hear about dark magic again.
* adding another check question.
* adding a way to reask for the invocations
NPC Waric

Additional fixes (including the latest additions to the script)