Add scroll feature(by sliding up and down)

Change-Id: I7db3928290a5d6f30324e80a3e780843695ffb0a

Slide on the right 40% of the screen can scroll the menu items up or down.This only works when menu_items > max_menu_rows.
Fix scrolling out of limit items

Change-Id: I1753389a4ef6e95306a7de454eca8410a5185b45
Merge branch 'cm-10.1' of https://github.com/mirom/android_bootable_recovery into cm-10.1
Fix english translation