[TYPO3-core] RFC #14490: New Backend design

[Benjamin Mack]

Hey,

committed the attached patches to trunk (rev. 7725 for images and css, 
rev. 7726 for html / php changes) after my preliminary +1.

As we all know there will be followups, but they will easier to test and 
such, we are sure that this is not the 100% final version.

BIG Thanks for everyone involved designing, developing, and consulting 
(CSS-wise).

All the best,
Benni.