Added new data bucket and quest functionality.

Added multiple new instance related quest functions.
	1. quest::GetInstanceIDByCharID(const char *zone, int16 version, uint32 char_id)
		- Allows you to pull the instance ID of a client by character ID.
	2. quest::AssignToInstanceByCharID(uint16 instance_id, uint32 char_id)
		- Allows you to assign an instance to a client by character ID.
	3. quest::RemoveFromInstanceByCharID(uint16 instance_id, uint32 char_id)
		- Allows you to remove a client from an instance by character ID.

Added spell buckets, similar to spell globals.
	- Uses a new spell_buckets table and the Spells:EnableSpellBuckets rule.

Added max level by data bucket.
	- Uses data bucket char_id-CharMaxLevel and Character:PerCharacterBucketMaxLevel rule.

zone/exp.cpp

@@ -695,6 +695,18 @@ void Client::SetEXP(uint32 set_exp, uint32 set_aaxp, bool isrezzexp) {
 			}
 		}
 	}
+	
+	if(RuleB(Character, PerCharacterBucketMaxLevel)){
+		uint32 MaxLevel = GetCharMaxLevelFromBucket();
+		if(MaxLevel){
+			if(GetLevel() >= MaxLevel){
+				uint32 expneeded = GetEXPForLevel(MaxLevel);
+				if(set_exp > expneeded) {
+					set_exp = expneeded;
+				}
+			}
+		}
+	}
 
 	if ((GetLevel() != check_level) && !(check_level >= maxlevel)) {
 		char val1[20]={0};
@@ -1133,6 +1145,22 @@ uint32 Client::GetCharMaxLevelFromQGlobal() {
 	return false;
 }
 
+uint32 Client::GetCharMaxLevelFromBucket() {
+	uint32 char_id = this->CharacterID();
+	std::string query = StringFormat("SELECT value FROM data_buckets WHERE key = '%i-CharMaxLevel'", char_id);
+	auto results = database.QueryDatabase(query);
+	if (!results.Success()) {
+        Log(Logs::General, Logs::Error, "Data bucket for CharMaxLevel for char ID %i failed.", char_id);
+        return false;
+    }
+	
+	if (results.RowCount() > 0) {
+		auto row = results.begin();
+		return atoi(row[0]);
+	}
+	return false;
+}
+
 uint32 Client::GetRequiredAAExperience() {
 #ifdef LUA_EQEMU
 	uint32 lua_ret = 0;