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
Added support for multiple extentions

Added support for:
-dhtml (Dynamic HTML)
-xht (XHTML)
Call getActiveEditor() to get the document when invoking save command.
Merge pull request #2466 from C1D/master

Added support for multiple extentions
Merge pull request #2469 from adobe/rlim/issue-2423

Use getActiveEditor() instead of getFocusedEditor() for save command.