Convert AphrontDialogView to safe HTML

Summary:
Done by searching for `AphrontDialogView` and then `appendChild()`.

Also added some `pht()`.

Test Plan: None.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4882

src/applications/maniphest/controller/ManiphestExportController.php

@@ -28,7 +28,7 @@ final class ManiphestExportController extends ManiphestController {
       $dialog->setUser($user);
 
       $dialog->setTitle('Excel Export Not Configured');
-      $dialog->appendChild(
+      $dialog->appendChild(hsprintf(
         '<p>This system does not have PHPExcel installed. This software '.
         'component is required to export tasks to Excel. Have your system '.
         'administrator install it from:</p>'.
@@ -38,7 +38,7 @@ final class ManiphestExportController extends ManiphestController {
         '</p>'.
         '<br />'.
         '<p>Your PHP "include_path" needs to be updated to include the '.
-        'PHPExcel Classes/ directory.</p>');
+        'PHPExcel Classes/ directory.</p>'));
 
       $dialog->addCancelButton('/maniphest/');
       return id(new AphrontDialogResponse())->setDialog($dialog);
@@ -59,8 +59,8 @@ final class ManiphestExportController extends ManiphestController {
       $dialog->setUser($user);
 
       $dialog->setTitle('Export Tasks to Excel');
-      $dialog->appendChild(
-        '<p>Do you want to export the query results to Excel?</p>');
+      $dialog->appendChild(phutil_tag('p', array(), pht(
+        'Do you want to export the query results to Excel?')));
 
       $dialog->addCancelButton('/maniphest/');
       $dialog->addSubmitButton('Export to Excel');