Convert name of array types to elem typoe followed by []

pglab/PgDatabaseCatalog.cpp

@@ -56,7 +56,16 @@ QString getTypeDisplayString(const PgDatabaseCatalog &cat, Oid oid)
 {
 	auto tc = cat.types();
 	auto t = tc->getByKey(oid);
-	return t.name;
+	QString s;
+	if (t.category == TypCategory::Array) {
+		auto et = tc->getByKey(t.elem);
+		s = et.name;
+		s += "[]";
+	}
+	else {
+		s = t.name;
+	}
+	return s;
 }