GlowPadView : Re-enable magneticTargets

Re-enable magneticTargets and add logic to make it
compatible with lockscreen shortcuts.

Change-Id: I523141f03566804888fde08a116f73ea62ca523e
Screenshot : Pass current user

Needed to complete the snapshot procedure

Change-Id: I40f63e261e213136cd739c06da6f005173427ae0