Settings: Bringing back basic system settings

and more translate for korean
[1/2] Add support for custom LED colors notification

Part of Settings

https://github.com/ThinkingBridge/platform_frameworks_base/commit/48f8fa
ebc58bf2ec5836d51f1632098417806322

Big thanks to cyanogenmod , omni :)
Settings: Status bar brightness control

Thanks to cm

Conflicts:
	res/values/strings.xml
Settings: Add Advanced reboot option

Thanks to DvTonder

This commit adds a setting in Development settings for including options
in the power menu for rebooting into recovery or bootloader, defauled to
off.

When enabled, the Advanced reboot options will only be available once
the
device is unlocked.