- Refactoring: Clean-up

- Fix: Race condition with svgicons and seticonsize
- Embedded editor: Use module form for now; drop unused inline attribute
- Embedded editor: Fix PNG export; work toward restoring PDF (add `getUIStrings` method to editor for assisting)
- canvg and importScript fixes

editor/external/dynamic-import-polyfill/importModule.js

@@ -23,7 +23,7 @@ export function importScript(url) {
       destructor();
     };
     script.onload = () => {
-      resolve(window[vector]);
+      resolve();
       destructor();
     };
     script.src = url;