Overscroll effects configuration (1/2)

Smooth~ scrolling effect
You can choose the scrolling effect!

Dokdo Project - neighbors28

Conflicts:

	core/java/android/provider/Settings.java
Custom OverScroll Color (1/2)

OverScroll Edge Glow Effect color customize

Dokdo Project - Gwon Hyeok

Conflicts:

	core/java/android/provider/Settings.java