KWin/kcm kwin redesign

These are the new categories for the redesign of kwin's kcm. (terietor here,because I am no expert please feel free to correct me :))

• accessibility ok
• focus change it to "Dark the window scene"
• tools ok
• candy change it to "Helper effects" and modify its contents to
  • outline
  • startup feedback
• Window management ok but reorganize its contents
  • Switch
    • Box
    • Cover
    • Flip
  • Present windows
  • Desktop Management
  • Desktop cube
  • Desktop cube animation
  • Desktop grid