RC: "Ribbon options" to "Ribbons"

IMO its understood that since its in RC then it has options. Plus
all the other options in RC are "NavBar Ring Options" but they don't
have the word options after them. Just a UX thing, not sure if you guys
agree :)

PS2: Ribbon -> Ribbons

Change-Id: I92ed78d4f2a3414b0943302398ffda7b2bf71555
Signed-off-by: Rohan Mathur <rohanmathur34@gmail.com>

Conflicts:
	res/xml/carbon_settings.xml