MDL-84148 tool_lp: clarify the primary save action of scales dialogue.

admin/tool/lp/templates/scale_configuration_page.mustache

@@ -59,7 +59,7 @@
 </div>
 
 <div data-region="scale-buttons" class="mt-1 float-sm-end">
-    <input type="button" class="btn btn-secondary" data-action="close" value="{{#str}}closebuttontitle{{/str}}"/>
     <input type="button" class="btn btn-secondary" data-action="cancel" value="{{#str}}cancel{{/str}}"/>
+    <input type="button" class="btn btn-primary" data-action="close" value="{{#str}}save{{/str}}"/>
 </div>
 <div class="clearfix"></div>