Changed profile selection to single-tap action

The behavior taken from reboot (choose action, select okay) was
inappropriate for profile selection, which has no big impact at all.

so now, simply selecting a new profile will toggle the action and close the dialog.

this patch is needed for the power menu qs tile (WiP)

Patchset 2: Remove cancel button and title to stay consistent with power
menu

Change-Id: I474d5ba4753e7d6cd21a916f2e2aaf8ddb224fd2