Implement custom restrictions activity. Fixed some bugs. Change-Id: I094a6ffcc41c2936f76a8731048d7cb712c1b857
Refactored User Settings UI to have two types of users. Display a list of apps to select. Edit user restrictions. Handle saving and updating RestrictionEntry items via User Manager. Change-Id: I3ad5aa71d5ef66dffd39e17ba0556f075ac10a0f