SystemUI: Correct settings observer usage

Settings observer was already created by a global variable, but
it was never used and instead a new one was created in start().

Corrected the code to utilize the already created settings observer.

Change-Id: I337ce12bf32f0355f6280f7b74767e5eb17438a6
Signed-off-by: Evan Anderson <evan@thelinuxman.us>
Merge "SystemUI: Correct settings observer usage" into kitkat
Merge remote-tracking branch 'aospa/kitkat' into kitkat
SystemUI: Make the dialog divider color themeable

The holo blue color might not be suitable for some themes. This commit
swaps out the background of all titleDivider elements to use another
resource. This has no difference from the perspective of the user of a
"stock" build but this is huge for theme users.

Thanks to Arz Bhatia for the suggestion.

Change-Id: Icb917220accac3ad38770067120a7b1be894961a
Signed-off-by: anerikg <anerikgames@gmail.com>

Conflicts:
	core/res/res/values/pa_colors.xml