Settings: cleanup new profiles UI

* cleanup old code
* for configuring profiles, add options to modify triggers and remove
the profile
* remove separate activity
* don't hardcode padding pixel sizes

Change-Id: I6b1d05c9f918714249411006c7562496e2a7539e
Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:

	src/com/android/settings/profiles/SetupActionsFragment.java
	src/com/android/settings/profiles/actions/item/ExpandedDesktopItem.java