minui: clean up some stuff, and avoid multiple key events on N1
minui: clean up some stuff, and avoid multiple key events on N1

Change-Id: I7d26a406eb200c866b2fbc841424ac698f6d3bf3

DerTeufel/dualboot_recovery,InsomniaAOSP/platform_bootable_recovery,DerTeufel/dualboot_recovery,InsomniaAOSP/platform_bootable_recovery,76Demented/bootable_recovery-,kylinmoddev/android_bootable_recovery,randomblame/bootable_recovery,InsomniaAOSP/platform_bootable_recovery,randomblame/bootable_recovery,76Demented/bootable_recovery-,Plain-Andy/android_platform_bootable_recovery,randomblame/bootable_recovery,76Demented/bootable_recovery-,DerTeufel/dualboot_recovery,76Demented/bootable_recovery-,DerTeufel/dualboot_recovery,randomblame/bootable_recovery,76Demented/bootable_recovery-,kylinmoddev/android_bootable_recovery,randomblame/bootable_recovery,kylinmoddev/android_bootable_recovery,InsomniaAOSP/platform_bootable_recovery,Plain-Andy/android_platform_bootable_recovery,Plain-Andy/android_platform_bootable_recovery,InsomniaAOSP/platform_bootable_recovery,kylinmoddev/android_bootable_recovery,DerTeufel/dualboot_recovery,Plain-Andy/android_platform_bootable_recovery