Use AppCompatContactsActivity as super class of activities (2/3)

- interpolator.fast_out_slow_in was introduce in API level 21, use
  linear for Kitkat.

- use AppCompatCheckBox to show colored CheckBox

- also fixed button color in contacts_unavailable_fragment_content on K

Bug: 25629359
Change-Id: I492f10adfb07e8f7d0fc2ffbac0063f2486820cc