Adding BlurryBar stuffs to BlurBar

- Using SBWallpaperEffectView instead of CKBlurView for blurring effect.
- New preferences pane added (for choosing blur style, DockShift method), while keeping the old one if you want to improve that existing instead.
- Using Flipswitch instead. (More easier to toggle the feature)
- New screenshot.
- Yes, you can consider choosing them for further development.