Merge " (bug 42004) Enable subpages per default on Project and Help namespaces."

diff --combined includes/DefaultSettings.php
index a6d745f,3a0b4d7..d68d991
--- 1/includes/DefaultSettings.php
--- 2/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@@ -3217,11 -3217,13 +3217,13 @@@ $wgNamespacesWithSubpages = array
        NS_TALK           => true,
        NS_USER           => true,
        NS_USER_TALK      => true,
+       NS_PROJECT        => true,
        NS_PROJECT_TALK   => true,
        NS_FILE_TALK      => true,
        NS_MEDIAWIKI      => true,
        NS_MEDIAWIKI_TALK => true,
        NS_TEMPLATE_TALK  => true,
+       NS_HELP           => true,
        NS_HELP_TALK      => true,
        NS_CATEGORY_TALK  => true
  );
@@@ -5992,22 -5994,6 +5994,22 @@@ $wgEnableAPI = true
   */
  $wgEnableWriteAPI = true;
  
 +/**
 + *
 + *     WARNING: SECURITY THREAT - debug use only
 + *
 + * Disables many security checks in the API for debugging purposes.
 + * This flag should never be used on the production servers, as it introduces
 + * a number of potential security holes. Even when enabled, the validation
 + * will still be performed, but instead of failing, API will return a warning.
 + * Also, there will always be a warning notifying that this flag is set.
 + * At this point, the flag allows GET requests to go through for modules
 + * requiring POST.
 + *
 + * @since 1.21
 + */
 +$wgDebugAPI = false;
 +
  /**
   * API module extensions.
   * Associative array mapping module name to class name.