todo:
    convbal -> not yet (wait yui)
    post 10,000 invoices per one time  -> ask david
    patient & staff
        - split name -> not yet
    staff have multi department -> added but set have to set permission
        - many2many
    
    show epo(yes) in list of hd case ->ok
    matching payment > ok
    create contact from staff -> ok
    script to clear invoice -> ok