Fix collation on ht_institutions schema (#22)

- Originally unset, add utf8_general_ci to be joinable with holdings_htitem_htmember in the catalog indexer.

Author: moseshll

sql/000_ht_schema.sql

@@ -142,7 +142,7 @@ CREATE TABLE `ht_institutions` (
   `last_update` timestamp NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
   KEY `ht_institutions_inst_id` (`inst_id`),
   KEY `ht_institutions_mapto_inst_id` (`mapto_inst_id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;
 
 
 DROP TABLE IF EXISTS `ht_namespaces`;