Tell what options were changed when prompting user for saving a modified preset. Also, check whether the preset was actually modified by performing a proper idempotent diff. #2165

xs/xsp/Config.xsp

@@ -23,6 +23,8 @@
         %code{% THIS->apply(*other, true); %};
     std::vector<std::string> diff(DynamicPrintConfig* other)
         %code{% RETVAL = THIS->diff(*other); %};
+    bool equals(DynamicPrintConfig* other)
+        %code{% RETVAL = THIS->equals(*other); %};
     void apply_static(FullPrintConfig* other)
         %code{% THIS->apply(*other, true); %};
     std::vector<std::string> get_keys()