ncurses: add manual painting of background, #344
ncurses: add manual painting of background, #344

when setting background color manually there was some strange bug
offsetting the bars and adding characters that are not cleaned up,
memory issue in ncurses?

fixed by adding spaces all over screen on init to paint background
manually.

nikp123/cava,nikp123/cava,karlstav/cava,karlstav/cava