[TYPO3-core] minor skin issue: wizard icons (see #2493)

[Martin Kutschker]

Martin Kutschker schrieb:
> Hi!
> 
> Please have a look at the new icons attached to bug #2493.
> 
> And also have a look at the fix for the skinning issue.
> 
> Me thinks only the call to the skinning API was missing.

Committed tp HEAD and TYPO3_4-0

The patch include a new icon for CSV export (also attached to bug).

Masi