Customizing the Dashboard

//Remove unwanted widgets from Dashboard
function remove_dashboard_widgets() {
    global$wp_meta_boxes;
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);
}
add_action('wp_dashboard_setup', 'remove_dashboard_widgets');



//Add a new widget to the Dashboard
function contact_help(){
     echo 'If you have questions about working with the Roux Academy WordPress system, contact Kim Neue at kn@rouxacademy.com or 674-555-1212';
}
function register_widgets(){
     wp_add_dashboard_widget( 'contact_help_widget', 'Need help?', 'contact_help');
}
add_action('wp_dashboard_setup', 'register_widgets' );


//Change log-in image
function custom_login_logo() {
  echo '<style type="text/css">
    h1 a { background-image:url('.get_bloginfo('stylesheet_directory').'/_images/ralogo_admin.png) !important; }
    </style>';
}
add_action('login_head', 'custom_login_logo');