TYPO3 Core

The page/file tree frame shows a big inconsistency and was kind of "ignored" while restyling for 4.4:
Active area is shown (near) white, while less important areas get more and more darker. This was not the case for the tree frames.
Also the highlight of the active tree element was dark, instead of bright, like it is in the module menu.

See http://forge.typo3.org/issues/10554 for screenshots

Files to delete:
typo3/sysext/t3skin/stylesheets/visual/viewport.css
typo3/sysext/t3skin/images/backgrounds/module-menu-right.gif
typo3/sysext/t3skin/images/backgrounds/module-menu-right.png
typo3/sysext/t3skin/images/backgrounds/module-menu-top.png

(issue imported from #M16032)