Implement GuardEventAI and add scripts for guards. (#196)

* Add command to apply aura.

* Add condition for no path to victim.

* Add Is Player condition.

* Database scripts and fixes.

* Improve GuardAI.

* Implement GuardEventAI.

* Mark faction as At War in client on aggro.

* Fix instance reset message.

* Reimplement invisability for Shade of Jindo.

* Cleanup ancient methods.

* Sync At War flag.

* Fix aura for Drunken Bruiser.

* Add LoS check.

src/scripts/ScriptLoader.cpp

@@ -36,9 +36,7 @@ void AddSC_npc_king_gordok();
 void AddSC_areatrigger_scripts();
 void AddSC_dragons_of_nightmare();
 void AddSC_boss_lord_kazzak();
-void AddSC_generic_creature();
 void AddSC_go_scripts();
-void AddSC_guards();
 void AddSC_npc_professions();
 void AddSC_npcs_special();
 void AddSC_Totems();
@@ -306,9 +304,7 @@ void AddScripts()
     AddSC_areatrigger_scripts();
     AddSC_dragons_of_nightmare();
     AddSC_boss_lord_kazzak();
-    AddSC_generic_creature();
     AddSC_go_scripts();
-    AddSC_guards();
     AddSC_npc_professions();
     AddSC_npcs_special();
     AddSC_Totems();