CDClient cleanup and optimization (#1023)

* CDClient cleanup and optimization

- Use static function to get table name
- Remove unused GetName function
- Replace above function with a static GetTableName function
- Remove verbose comments
- Remove verbose initializers
- Remove need to specify table name when getting a table by name
- Remove unused typedef for mac and linux

* Re-add unused table

Convert tables to singletons

- Convert all CDClient tables to singletons
- Move Singleton.h to dCommon
- Reduce header clutter in CDClientManager

dWorldServer/WorldServer.cpp

@@ -168,7 +168,7 @@ int main(int argc, char** argv) {
 		return EXIT_FAILURE;
 	}
 
-	CDClientManager::Instance()->Initialize();
+	CDClientManager::Instance();
 
 	//Connect to the MySQL Database
 	std::string mysql_host = Game::config->GetValue("mysql_host");