We've had a set of %placeholders in our base styles for quite a while
but not butten the bullet to use them. This begins to use them.
We had to make a small amount of tweaks to base whilst doing this, but
its as we'd prefer there to be as few font placeholders as possible. We
might/should be able to reduce these further at somepoint, or
potentially rename them. We currently have six header fonts (or 4 header
fonts/2 strong body fonts) and 3 body fonts.
We also noticed an empty CSS file and deleted that while we were here.
We also noticed that the bottom border of structure tabs was a pixel
larger than ours so we tweaked that here also.
* Begin refactoring CSS into component folders. Moved most
components into layout/skin folders, left out a couple of ones I want
to think about more.
* Adjust grays based on recent Structure changes
* Switch to fullscreen layout for lists and detail, left aligned forms (#4435)
* Specifically use the 'actions_close' label, not just the :last-child (actions-group)
* Replace some non-var-ed colours in vaults code skin, plus prefixing (black and white)
John Cowen