rename app to 'deleted files'

apps/files_trashbin/appinfo/info.xml

 <?xml version="1.0"?>
 <info>
 	<id>files_trashbin</id>
-	<name>Trash bin</name>
+	<name>Deleted files</name>
 	<description>Keep a copy of deleted files so that they can be restored if needed</description>
 	<licence>AGPL</licence>
 	<author>Bjoern Schiessle</author>