Merge branch '4.8'

# Conflicts:
#	calendar-bundle/src/Resources/contao/classes/Events.php
#	calendar-bundle/src/Resources/contao/dca/tl_calendar_events.php
#	calendar-bundle/src/Resources/contao/modules/ModuleCalendar.php
#	calendar-bundle/src/Resources/contao/modules/ModuleEventReader.php
#	comments-bundle/src/Resources/contao/dca/tl_content.php
#	comments-bundle/src/Resources/contao/dca/tl_module.php
#	composer.json
#	core-bundle/src/Resources/contao/classes/Backend.php
#	core-bundle/src/Resources/contao/classes/Versions.php
#	core-bundle/src/Resources/contao/dca/tl_content.php
#	core-bundle/src/Resources/contao/dca/tl_files.php
#	core-bundle/src/Resources/contao/dca/tl_image_size.php
#	core-bundle/src/Resources/contao/dca/tl_member.php
#	core-bundle/src/Resources/contao/dca/tl_opt_in.php
#	core-bundle/src/Resources/contao/dca/tl_page.php
#	core-bundle/src/Resources/contao/dca/tl_undo.php
#	core-bundle/src/Resources/contao/drivers/DC_Folder.php
#	core-bundle/src/Resources/contao/drivers/DC_Table.php
#	core-bundle/src/Resources/contao/forms/FormCaptcha.php
#	core-bundle/src/Resources/contao/helper/functions.php
#	core-bundle/src/Resources/contao/library/Contao/Automator.php
#	core-bundle/src/Resources/contao/library/Contao/Database/Installer.php
#	core-bundle/src/Resources/contao/library/Contao/Database/Updater.php
#	core-bundle/src/Resources/contao/library/Contao/Input.php
#	core-bundle/src/Resources/contao/pages/PageRegular.php
#	core-bundle/src/Resources/contao/widgets/FileTree.php
#	core-bundle/src/Resources/contao/widgets/PageTree.php
#	monorepo.yml

src/Resources/contao/classes/Newsletter.php

@@ -1015,7 +1015,7 @@ public function getSearchablePages($arrPages, $intRoot=0, $blnIsSitemap=false)
 						}
 
 						// The target page is exempt from the sitemap (see #6418)
-						if ($objParent->sitemap == 'map_never')
+						if ($objParent->robots == 'noindex,nofollow')
 						{
 							continue;
 						}