fb: give the system proper values back if it is a hw key or navbar device

as well allow this behaviour to be overwritten by system.prop like
it is suggested by google.

Needed to show eg the menu button in apps correct on the different
device types

Change-Id: Ic6145fb70ec9b67802d6d7a5ce70c21f3452cdcd
fb: enable navbar for hw key devices

we moved this part into PhoneWindowManager which controlls the navbar.
Due that we allow on all devices a navbar the check on PhoneStatusBar
is not needed and prevend the navbar on comming up on hw key devices

Change-Id: Ia3aef15389007cba1b3905b5de9f084578b4aca3
Frameworks: Policy: implement a pin keypad shuffler [1/2]

this is to further prevent people using the tablet guessing your pin based on fingerprints left on the screen
example of the expected outcome - https://www.dropbox.com/sh/r3xb2q53ksaqni9/Oz1Eu8Dm7O

- correct coding style
- added reload button

PatchSet:
- simplify shuffle code
- fix over shifting in some cases
- add reload button functionallity
- add lockscreenutils method to detect only PIN lock
  for settings
- exclude sim and simpuk PIN lock
- add drawables for reload button

PatchSet
- cleanup

PatchSet:
- fix shuffle NumKeyPad even if a theme replaces the xml
  and reload button is not present.

PatchSet:
- add mode disabled/always/on request

cheers

kufi

Ported to new keyguard package on 4.4

Change-Id: I6cf23a70a24ff0d640850d35acd4584e2e8d2192