slight improvements and generality increases

slight improvements and generality increases

enabled checkin on files in cool permissionator, rather than just directories,
although the intended purpose of fixing the crontabs file for my user in one weird scenario (where my original uid had changed,
and then a new user was added with the old uid, meaning my crontab was inaccessible to me) did not work, since the permissions
on the crontabs directory keeps normal users from seeing things in there, including their own crontab file.