Fix custom app icons on navbar

Change-Id: I8c3811d598e4abd04dd50c2ae60492cd260f6c7f
Signed-off-by: nuclearmistake <nuclearmistake@gmail.com>
SystemUI: update nav bar keyguard logic

More consistant with statusbar transparency logic.

Change-Id: Ieba5e695417f2c0a7e34805a21c7b198274ccf83
Signed-off-by: Roman Birg <romanbirg@gmail.com>