fix possible NPE

mTopFullscreenOpaqueWindowState is on certain conditions null
and will throw an NPE....check for it to prevend it

Change-Id: Ibfb9ad375a9bdfc4e759f55934e759b69c448b49
Frameworks: activate PIE on Lockscreen

completly activate it now if navbar is disabled, expanded desktop or
whatever. The bottom trigger can be used on Lockscreen
if the user want (left and right does not make sense due the wigets.
If navigationbar hints are disabled it show instead
the home button the tinny circle which opens search/gnow. Longpress
action is the same like the one which was bind to the homebutton

slight adjust of default values trigger height and overall size

as well colorize and set alpha  on navbar for the tinny keyguard circle
like the other navbar buttons to be consistent

Change-Id: Ia721d02ae44ef0f9886224414c2932f5c24c0de6
Framworks: clean up trigger code

+ small fix

how to reproduce the bug
activate hide trigger on ime.....open ime...pull down notification drawer
close it again.....pie trigger left and right do not change back again

Change-Id: Ibbc1ba8731046b7214f8019f77491c9d2da776b8
Framewors: do not call every time setupTriggers

if pie is disabled

Change-Id: Iecfe5a074aa11a2f773ba176a51a4ccad121f1de
Fix: lockscreen bottom trigger on expanded desktop mode

did not show up in expanded mode before. Only on navigation bar disabled
or 0 values

Change-Id: I8a7215438b7205575bfeea99778c6203da47d82f
another cleanup

why complicated when it is easy. I will stop for today lol
just a small code cleanup

cheers

Change-Id: I3a17555fcc613c1466578758446f62b8aba0561f
Merge branch 'slim-4.3' into jb43