[TYPO3-core] RFC #14513: Improve rendering of icons in t3-row-header

[Christian Kuhn]

Steffen Gebert wrote:
> Bugtracker references:
> http://bugs.typo3.org/view.php?id=14513
> 
> Branches:
> trunk
> 
> Problem:
> Changing the rendering of sprite icons lead to some changes, which 
> weren't reflected by 0014490.
> 
> Solution:
> This patch reformatts the t3-row-headers to again look like intended.

Committed to trunk rev. 7746 after my +1 on reading and testing.

Thanks
Christian