refresh

Use rgb for bg color

Update icon and locale

update favicon and extension icons

update icons, favicons, screenshots, readme, remove background script…

…, remove permissions

prepare for mv3

bump version: add screenshots (eb00b14) and maintenance (f31caa4)

change light background color to #f7f7f7 and dark background color to…

… #333333

bump version number (add Russian locale #1)

Icon alignment and rel=icon href