SystemUI: Update circle battery UI to be in line with CM

Paranoid Android circle battery icon was too thin and had the wrong shade of white.

Fixes: AOSPA-179, community request

Fixed color to match other battery icons

PS2: Fixed spacing

Src: https://gerrit.paranoidandroid.co/#/c/4030/
How it looks/origin: https://paranoidandroid.atlassian.net/browse/AOSPA-179

Change-Id: I084bbacefb37fdf64368f80baa95d79e2bd8e2bc