put actual utf8 char in description of snippets
remove iTerm test
crate bin dir for scripts closly tied to vims config

First script in ~/.vim/bin is gvim.sh (formaly transparent-gvim.sh) moved here
from ~/src/shell.  These scripts can be linked to ~/bin or ~/.vim/bin can be
added to $PATH.
smaller updates to vimrc
update for "liebe grüße" mail snippets
bin/gvim.sh: remove --remote but add --editor
gvim: use powerline font