Nicer formatting for exported supervisord files

1. Remove newline from beginning of supervisord files
2. Put blank lines between [program] sections for readability

Example

    [program:app-alpha-1]
    command=./alpha
    autostart=true
    autorestart=true
    stopsignal=QUIT
    stdout_logfile=/var/log/app/alpha-1.log
    stderr_logfile=/var/log/app/alpha-1.error.log
    user=app
    directory=/tmp/app
    environment=PORT="5000"

    [program:app-alpha-2]
    command=./alpha
    autostart=true
    autorestart=true
    stopsignal=QUIT
    stdout_logfile=/var/log/app/alpha-2.log
    stderr_logfile=/var/log/app/alpha-2.error.log
    user=app
    directory=/tmp/app
    environment=PORT="5001"

    [group:app]
    programs=app-alpha-1,app-alpha-2
Merge pull request #503 from msabramo/export_supervisord_nicer_formatting

Nicer formatting for exported supervisord files