SystemUI: Fix blank Navring on boot,

Need to setDrawables peeps....

better...

Change-Id: I17b9d1f3652e9dbbb75d4106c6197aaaae35c09e
FW:  Bring Transparency to Tablet UI {WIP}

This will enable Transparency settings in TabletUI.

Also this will fix some quirks introduced by the fading transparency changes.

Change-Id: I89b4e97f70af2e9ef5245524c7bd765293ef044b
Signed-off-by: Zaphod <mwilson@acesappraisal.com>