Comment out slide padding

Why was this here to begin with?
Add #navigation.hover to be able to fake navigation hovering
Add editor styles
Expand Stopwork API

Add goto_slide, current_slide_number, remove_slide,
remove_current_slide, add_slide, add_slide_here, replace_slide,
replace_current_slide, storage_id, and init methods
Add slide_source array to Stopwork object
Update core logic to use new API, local storage
Restore old body behaviour