Fixed an issue when adding a new template from the browse view. This update also includes an added "delete all" button to the browse views for macOS (moved the already existing one in iOS) and added the ability to set/change the default category of any newly created template.

Mainly minor fixes. The biggest update is for macOS which now has a fix on the calculated dimensional string which led to PNG resizing. On both versions there's several small changes like putting SVG before PNG when editing templates and adding the ability to add a template directly to a category.