use zenburn for console environments

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
more messing around with the colorscheme

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
add g:numbertoggle_min_cols setting

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>