Add default length of lists

This can already be done using the filter options on each list.

(EDIT: Although this is setting per list rather than globally)

This could be easily acheivable by adding the following lines to the storm_admin_settings function in storm.module

  $form['storm_default_items_per_page'] = array(
    '#type' => 'textfield',
    '#title' => t('Default Items per Page'),
    '#default_value' => variable_get('storm_default_items_per_page', 10),
    '#description' => t('Default items per page when viewing lists'),
    '#size' => 5,
    '#weight' => $w++
  );

Then in the modeles theme.inc i.e. for Tickets stormticket.theme.inc change the code in stormticket_list

  $itemsperpage = $_SESSION['stormticket_list_filter']['itemsperpage'];
  if (!$itemsperpage) {
    $itemsperpage = variable_get('storm_default_items_per_page', 10);
    $_SESSION['stormticket_list_filter']['itemsperpage'] = $itemsperpage;
  }

So that you're getting the default setting or using 10 if there isn't one.

Looks good.

Committed to all modules.

Note that the items per page settings are in each module's admin.inc file, not theme.inc and that it is the setting in stormmodule_list_filter which matters rather than stormmodule_list.