log seats and add position to export table in lectures

re #8 (closed)

app/controllers/course/members.php

@@ -240,6 +240,9 @@ class Course_MembersController extends AuthenticatedController
                         $current_member->position = $i;
                         $position[$current_member->position] = true;
                         $current_member->store();
+                        $membername = $current_member->vorname . " " . $current_member->nachname;
+                        StudipLog::log('SEAT_RESERVATION', $this->course_id, null,
+                            sprintf('%s hat Sitzplatz %s erhalten', $membername, $current_member->position));
                         break;
                     }
                 }
@@ -273,8 +276,12 @@ class Course_MembersController extends AuthenticatedController
             }
 
             foreach ($current_members as $current_member) {
+                $old_position = $current_member->position;
                 $current_member->position = 0;
                 $current_member->store();
+                $membername = $current_member->vorname . " " . $current_member->nachname;
+                StudipLog::log('SEAT_RESERVATION', $this->course_id, null,
+                    sprintf('%s hat Sitzplatz %s zurückgegeben', $membername, $old_position));
             }
         }