diff --git a/UI/WebServerResources/minus.png b/UI/WebServerResources/minus.png new file mode 100644 index 000000000..66a71f1ff Binary files /dev/null and b/UI/WebServerResources/minus.png differ diff --git a/UI/WebServerResources/plus.png b/UI/WebServerResources/plus.png new file mode 100644 index 000000000..bf37a17df Binary files /dev/null and b/UI/WebServerResources/plus.png differ