Add and use cgit_find_stats_periodname() in print_repo()

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

cgit.c

@@ -491,6 +491,9 @@ void print_repo(FILE *f, struct cgit_repo *repo)
 		fprintf(f, "repo.snapshots=%s\n", tmp);
 		free(tmp);
 	}
+	if (repo->max_stats != ctx.cfg.max_stats)
+		fprintf(f, "repo.max-stats=%s\n",
+		        cgit_find_stats_periodname(repo->max_stats));
 	fprintf(f, "\n");
 }