Task #1355:

- If the sender of a message is an admin: show all the vorlage with
mimetype = text/html
 - If the sender of a message is NOT an admin: show all the
vorlage that belongs to the organisation units of the user
and the parents of those organisation units until the root
of the organisation unit tree

Changes:
 - Added method isAdminByPersonId to model Benutzerrolle_model
 - Added method _getAllHTMLVorlage to Vorlage_widget
 - Added method _getUserVorlage to Vorlage_widget

application/views/system/messageWrite.php

@@ -93,7 +93,7 @@
 						<?php
 							echo $this->widgetlib->widget(
 								'Vorlage_widget',
-								array('oe_kurzbz' => $oe_kurzbz),
+								array('oe_kurzbz' => $oe_kurzbz, 'isAdmin' => $isAdmin),
 								array('name' => 'vorlage', 'id' => 'vorlageDnD')
 							);
 						?>