libfic: increase authors field size

libfic/db.go

@@ -59,7 +59,7 @@ CREATE TABLE IF NOT EXISTS events(
 CREATE TABLE IF NOT EXISTS themes(
   id_theme INTEGER NOT NULL PRIMARY KEY AUTO_INCREMENT,
   name VARCHAR(255) NOT NULL UNIQUE,
-  authors VARCHAR(255) NOT NULL
+  authors TEXT NOT NULL
 );
 `); err != nil {
 		return err