TYPO3 Core

The Constant Editor is using "rednumbers"
to highlight certain constants. This can be done
like this in the Constants

TSConstantEditor.content.3 = styles.content.links.extTarget

to add a red "3" (rendered as gif) inside
the constant editor.

The "rednumber icons" (1-20) are available in
three locations inside the core, and are now
replaced by inline HTML based on twbs.

The corresponding images are therefore removed,