add earlyaccess code generation

booking.admin.inc

@@ -627,6 +627,14 @@ function booking_admin() {
       t('Yes')
     ),
     '#default_value' => variable_get('booking_enable_earlyaccess_codes', 0)
+  );
+  $form['regn_options']['booking_earlyaccess_codes_count'] = array(
+    '#type' => 'textfield',
+    '#title' => t('Number of early access codes'),
+    '#description' => t("Set to the number of early access codes to generate. You will need to visit the configuration page to actually generate these codes."),
+    '#size' => 3,
+    '#maxlength' => 3,
+    '#default_value' => variable_get('booking_earlyaccess_codes_count', '0'),
   );  
   
   $form['management'] = array(