fix editor start with src and dist using es-dev-server

dist/editor/extensions/ext-webappfind.js

@@ -1741,7 +1741,7 @@ var extWebappfind = {
               buttons = [{
                 id: 'webappfind_save',
                 //
-                icon: svgEditor.curConfig.extIconsPath + 'webappfind.png',
+                icon: 'webappfind.png',
                 type: 'app_menu',
                 position: 4,
                 // Before 0-based index position 4 (after the regular "Save Image (S)")
@@ -1766,7 +1766,7 @@ var extWebappfind = {
               }];
               return _context.abrupt("return", {
                 name: strings.name,
-                svgicons: svgEditor.curConfig.extIconsPath + 'webappfind-icon.svg',
+                svgicons: 'webappfind-icon.svg',
                 buttons: strings.buttons.map(function (button, i) {
                   return Object.assign(buttons[i], button);
                 })