Core/Globals: Use std::string rather than char* to pass script names around.

(cherry picked from commit b7b49fe35f87e83813466cb302ff17381792e607)

Conflicts:
	src/server/game/Battlegrounds/BattlegroundMgr.cpp
	src/server/game/Globals/ObjectMgr.cpp

src/server/game/Scripting/ScriptMgr.cpp

@@ -129,7 +129,7 @@ class ScriptRegistry
             {
                 // Get an ID for the script. An ID only exists if it's a script that is assigned in the database
                 // through a script name (or similar).
-                uint32 id = sObjectMgr->GetScriptId(script->GetName().c_str());
+                uint32 id = sObjectMgr->GetScriptId(script->GetName());
                 if (id)
                 {
                     // Try to find an existing script.