refactor poll_votes database queries

anonkun.sql

@@ -67,6 +67,7 @@ CREATE TABLE `polls` (
 CREATE TABLE `poll_options` (
 	`option_id` MEDIUMINT UNSIGNED NOT NULL AUTO_INCREMENT,
 	`post_id` MEDIUMINT UNSIGNED NOT NULL,
+	`quest_id` SMALLINT UNSIGNED NOT NULL,
 	`option_text` VARCHAR(200) NOT NULL,
 	PRIMARY KEY (`option_id`),
 	FOREIGN KEY (`post_id`) REFERENCES `polls`(`post_id`)