Fix layout-padding css

Adds a `,` which was missing in 5caa22b2c444485b3d340cda662d8808b1fc381d when `layout-padding` was readded. Also removes a comment saying `layout-padding` is depreciated since it has been readded.
I mean the specific line on which I have commented on :)
It is probably a "left-over" from when `layout-padding` was deprecated in favor of `layout-margin`.

There doesn't seem to be any reason for `layout-padding` to have a `margin-TOP` rule.
Whether it needs a `padding-TOP` rule, I'll let the CSS guys decide :)