Make the edit area disabled until the user selects he wants custom
positions.
Its a source of confusion if the user can edit the positions but doesn't
see anything happen in his decorations upon apply. This gives immediate
feedback that the checkbox should be enabled.
Conflicts:
kwin/kcmkwin/kwindecoration/buttonsconfigdialog.cpp
* Displays list with previews instead of a dropdown with just the name.
* Configuration is moved into an own dialog accessible via a configure button for each decoration
* Button configuration is moved into a dialog, by that the tabs are removed
* Aurorae themes are listed just like normal decorations
* GHNS support to download Aurorae themes
* Semi-live preview of changed: when configure dialog is closed the preview is updated
* About Dialog added for each decoration (needs updates in desktop files - the information is missing)
svn path=/trunk/KDE/kdebase/workspace/; revision=1077141
