Framworks: disable observer and receiver if PIE is disabled

on high end devices that is maybe not needed. But there
is in general no need to enable the obeserver/receiver
when PIE is disabled (or expanded mode is off)
This change destroy and disables the PIE in most parts
when it is disabled. + a small doubel register
correction

greetings SlimRoms

PatchSet 2:
- remove PieLayout observer completly - thanks Jens

PatchSet 3:
- remove unnecessary call to setupSnapPoints()
- reuse already created snap points

PatchSet 4:
- small corrections on setupSnapPoints() and call
- remove not needed second call of PieController attachTo()
- disable TelephonyManager listener

PatchSet 5:
- fix up detach logic

PatchSet 7:
- cleanup

PatchSet 8:
- Effective Java rule #41
- fixed some pie controller leak

Change-Id: I8ef8797e7d4f8ee73d31a8296f5747415567bbda
Frameworks: Fix do not show snappoints if triggermask disables edge

as the title says do not show on lockscreen or notification
drawer the snappoints on the disabled edges. Pass
trigger slots and mask trough and take into account

PatchSet 2:
- some refactoring

Change-Id: I0413ffe86169c5d1cb906598d6006bbf1463770b