Make attr('value') not modify the text being shown in the editor.
Make attr('value') not modify the text being shown in the editor.

For now (at least) doing the simple fix of cloning the editor data before running the post-filter transforms (including the problematic !EnterKeyHandling (BR) mode).   Cloning is safer in any case, albeit less efficient.

Fixes #9459 !strict.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@18423 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful