Short documentation for attendees in internal event struct; bugfix

plugins/calendar/calendar.php

@@ -1156,7 +1156,7 @@ class calendar extends rcube_plugin
       
       foreach ($fblist as $slot) {
         list($from, $to) = $slot;
-        if ($from <= $end && $to >= $start) {
+        if ($from <= $end && $to > $start) {
           $status = 'BUSY';
           break;
         }

plugins/calendar/drivers/calendar_driver.php

@@ -58,6 +58,12 @@
  *              'id' => 'Attachment identifier'
  *   ),
  * 'deleted_attachments' => array(), // array of attachment identifiers to delete when event is updated
+ *     'attendees' => array(   // List of event participants
+ *            'name' => 'Participant name',
+ *           'email' => 'Participant e-mail address',  // used as identifier
+ *            'role' => 'ORGANIZER|REQ-PARTICIPANT|OPT-PARTICIPANT|CHAIR',
+ *          'status' => 'NEEDS-ACTION|UNKNOWN|ACCEPTED|TENTATIVE|DECLINED'
+ *    ),
  *  );
  */