Merge "Added heartbeat for pingback."

diff --combined RELEASE-NOTES-1.31
index 1747b07,4181a2c..bc142ae
--- 1/RELEASE-NOTES-1.31
--- 2/RELEASE-NOTES-1.31
+++ b/RELEASE-NOTES-1.31
@@@ -71,6 -71,7 +71,7 @@@ production
  * Wikimedia\Rdbms\IDatabase::doAtomicSection(), non-native ::insertSelect(),
    and non-MySQL ::replace() and ::upsert() no longer roll back the whole
    transaction on failure.
+ * (T189785) Added a monthly heartbeat ping to the pingback feature.
  
  === External library changes in 1.31 ===
  
@@@ -294,8 -295,6 +295,8 @@@ changes to languages because of Phabric
    * StripState::merge()
  * The "free" CSS class is now only applied to unbracketed URLs in wikitext. Links
    written using square brackets will get the class "text" not "free".
 +* SpecialPageFactory::getList(), deprecated in 1.24, has been removed. You can
 +  use ::getNames() instead.
  * OpenSearch::getOpenSearchTemplate(), deprecated in 1.25, has been removed. You
    can use ApiOpenSearch::getOpenSearchTemplate() instead.
  * The global function wfBaseConvert, deprecated in 1.27, has been removed. Use
@@@ -312,13 -311,6 +313,13 @@@
  * The global function wfOutputHandler() was removed, use the its replacement
    MediaWiki\OutputHandler::handle() instead. The global function was only sometimes defined.
    Its replacement is always available via the autoloader.
 +* ChangeTags::listExtensionActivatedTags and ::listExtensionDefinedTags, deprecated
 +  in 1.28, have been removed.  Use ::listSoftwareActivatedTags() and
 +  ::listSoftwareDefinedTags() instead.
 +* Title::getTitleInvalidRegex(), deprecated in 1.25, has been removed. You
 +  can use MediaWikiTitleCodec::getTitleInvalidRegex() instead.
 +* HTMLForm & VFormHTMLForm::isVForm(), deprecated in 1.25, have been removed.
 +* The ProfileSection class, deprecated in 1.25 and unused, has been removed.
  
  == Compatibility ==
  MediaWiki 1.31 requires PHP 5.5.9 or later. Although HHVM 3.18.5 or later is supported,