Revert "Drop unused submit trigger in lifecycle UI"

This reverts commit a6c12e6.

Turns out that we need this trigger for layout-only changes.

This commit also tweaks code to trigger "ExportAsConfiguration()" on form
submit, instead of the original imprecise version that was on ".submit"
click.

share/static/js/lifecycleui-editor.js

@@ -242,6 +242,10 @@ jQuery(function () {
                 self.ToggleSimulation();
                 return true;
             });
+
+            jQuery('form[name=ModifyLifecycle]').submit(function(e) {
+                self.ExportAsConfiguration();
+            });
         }
 
         RenderNode() {