Extension:Moderation/moderation block table

See also: https://github.com/edwardspec/mediawiki-moderation/blob/master/sql/patch-moderation_block.sql

MariaDB [wiki]> describe moderation_block; +--+--+--+-+++ +--+--+--+-+++ +--+--+--+-+++
 * Field       | Type             | Null | Key | Default        | Extra          |
 * mb_id       | int(10) unsigned | NO   | PRI | NULL           | auto_increment |
 * mb_address  | tinyblob         | NO   | UNI | NULL           |                |
 * mb_user     | int(10) unsigned | NO   |     | 0              |                |
 * mb_by       | int(10) unsigned | NO   |     | 0              |                |
 * mb_by_text  | varbinary(255)   | NO   |     |                |                |
 * mb_timestamp | binary(14)      | NO   |     |                |                |