Update src/editor/EditorUtils.js

Added support for .pyw (Normal python script but when python sees this, It does not run it in console mode).
rev to sprint 19
Merge pull request #2463 from adobe/jasonsanjose/sprint19

rev to sprint 19
Merge pull request #2461 from C1D/pyw-support

Added support for .pyw files
Merge branch 'master-up' into submodule-warning