Move repo summary functions into ui-summary.c

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
diff --git a/cgit.h b/cgit.h
index bf5bd8d..3a153a5 100644
--- a/cgit.h
+++ b/cgit.h
@@ -79,4 +79,7 @@
 
 extern void cgit_repo_config_cb(const char *name, const char *value);
 
+extern void cgit_print_repo_summary();
+
+
 #endif /* CGIT_H */