Extension:Translate/translate groupstats table

mysql> describe translate_groupstats; ++-+--+-+-+---+ ++-+--+-+-+---+ ++-+--+-+-+---+
 * Field         | Type            | Null | Key | Default | Extra |
 * tgs_group     | varbinary(100)  | NO   | PRI | NULL    |       |
 * tgs_lang      | varbinary(20)   | NO   | PRI | NULL    |       |
 * tgs_total     | int(5) unsigned | YES  |     | NULL    |       |
 * tgs_translated | int(5) unsigned | YES |     | NULL    |       |
 * tgs_fuzzy     | int(5) unsigned | YES  |     | NULL    |       |
 * tgs_proofread | int(5) unsigned | YES  |     | NULL    |       |