Dotcase: add permission to end calls

Without this permission, rejecting calls fails (crash)

Change-Id: I39128158da27feb18d8e2d200ca1d9fe2c782f7f
Dotcase: fix typo in snooze sprite

One pixel was 21 instead of 12

Change-Id: Ic27863ea5dd62c9f48de917368ad29bdd849e009
Dotcase: do not timeout if ringing or alarm

Change-Id: I88b54163c3c971e9b3d1103e5b911305c5581874
Dotcase: Add proximity detection to ignore touches in pocket

Change-Id: Ib0126c384e5947118be6750892ea45b8a4334496