diff --git a/interface/web/themes/default/assets/images/arrow.png b/interface/web/themes/default/assets/images/arrow.png
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/interface/web/themes/default/assets/images/plus.png b/interface/web/themes/default/assets/images/plus.png
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391