fixperm.sh: update acl deletion
mailnotify.sh: do not delete old notifications

This might help reduce "empty" notifications which seem to be created when we
try to remove notifications.
volume.scpt: add help option
internet-search.sh: add new functions for future coding
add translate.sh maybe for future integration with internet-search.sh
update linking in makefile
merge old script into mailnotify.sh
new script to lock screen
add system password script
remove old mailcheck scripts
update lock-screen.scpt
update iterm-session.scpt
update copy-music.sh
update .gitignore