Add tmux-navigator vim plugin as submodule

Signed-off-by: Nick Diego Yamane <nick.yamane@openbossa.org>
Change TERM env var to xterm-256color instead of screen-256color

Signed-off-by: Nick Diego Yamane <nick.yamane@openbossa.org>
[lenovo-w520] Add and set icecc bundle specific to environment

Signed-off-by: Nick Diego Yamane <nick.yamane@openbossa.org>