This fixes the bug where drag-swapping a color and then deleting a row,
  deletes more colors than expected.

* WhatsThis
  - Use kpBug::QWidget_SetWhatsThis() to make it work
  - More detailed text

* slotColorDoubleClicked(): remove unneeded setModified()

* Add and fix comments


svn path=/trunk/KDE/kdegraphics/kolourpaint/; revision=716735