Settings: : Add ability to change the color in battery saver mode (1/2) + ColorPicker

User complain about the ugly orange....give the user the ability to change the
color in status and navigation bar if battery saver mode is activated.

Especially for you Tylog :D

Change-Id: I37bc2865e6af4ea84cb4b9d254f5e8b1580083a9

Conflicts:
	res/values/n5x_strings.xml
Battery text mode (2/2)
PS5: More configuration
PS7: Rebased and changed topic

Change-Id: I13bdf2236811f535b0ac324b5b78c0ab12f365a6
Signed-off-by: kecinzer <kecinzer@gmail.com>
Settings: fix some icons
Change-Id: I923c28b01a819c79bd4965b61337fdc99cb53c0b