Chronus: Add support for alternate (Color) weather icons

Color weather icons sourced from https://github.com/Root-Box
with credit to Vostradamus & m.Long (maxromanyuk)(xiao4)

Remove MDPI resources since there are no 4.2.1 MDPI devices

Change-Id: I4aed8ce327d4eaf01413da0cce3aa46e8a8e156d
Chronus: Standardize preference categories and layout

Change-Id: I22b1b8e826e6671f5227ddb81ddce57fbab0f54d