* orientation option to slideshows: rewritten to require explicitly configured choices; supports a custom aspectRatio option for each choice
* apos.getFilePath (browser side): fixed bug producing wrong URLs for crops
* When you edit an existing widget, it is now completely re-rendered and replaced with a new DOM element, allowing the server to change classes and attributes of the widget itself, not just its contents
* Refactoring & cleanup of slideshow editor and widget editor generally
* Preexisting crops built for some other aspect ratio can be wrong for the new one, detect that and autocrop