If no explicit session file is passed in and a new session is being
created tm will look for a .tmux.session file in the pwd and use that to
set up the session.
Moved all personal scripts to ~/.local/bin to be systemd file hierarchy
compliant, as well as XDG compliant. Since they are not configuration
options they don't have anything to do in .config directories.
Also, it's just easier to find than the previous .config/scripts/bin.
