Add title for filemode_icon and fix missing icons

mail/inc/class.mail_compose.inc.php

@@ -1380,6 +1380,7 @@ class mail_compose
 			$attach['filemode_icon'] = !is_dir($attach['file']) &&
 					($content['filemode'] == Vfs\Sharing::READONLY || $content['filemode'] == Vfs\Sharing::WRITABLE)
 					? Vfs\Sharing::LINK : $content['filemode'];
+			$attach['filemode_title'] = lang(Vfs\Sharing::$modes[$attach['filemode_icon']]['label']);
 		}
 
 		$content['to'] = self::resolveEmailAddressList($content['to']);

mail/templates/default/compose.xet

@@ -108,7 +108,7 @@
 					</columns>
 					<rows>
 						<row class="row attachmentRow">
-							<image src="$row_cont[filemode_icon]"/>
+							<image src="$row_cont[filemode_icon]" statustext="$row_cont[filemode_title]"/>
 							<description id="${row}[tmp_name]"/>
 							<description class="useEllipsis et2_link" id="${row}[name]" no_lang="1" onclick="app.mail.displayUploadedFile"/>
 							<vfs-size align="right" id="${row}[size]" />