Merge remote-tracking branch 'refs/remotes/origin/3.0'

diff --cc wcfsetup/install/files/lib/system/package/plugin/PagePackageInstallationPlugin.class.php
index cafba51e56ec7eadbeda9a254a6a70dbf444c4f9,af113255d49617a0e22bf3335566b906ebb4ab9a..c9aec695302c632ef4d56febdf5f0d81f7080b88
--- 1/wcfsetup/install/files/lib/system/package/plugin/PagePackageInstallationPlugin.class.php
--- 2/wcfsetup/install/files/lib/system/package/plugin/PagePackageInstallationPlugin.class.php
+++ b/wcfsetup/install/files/lib/system/package/plugin/PagePackageInstallationPlugin.class.php
@@@ -2,8 -2,8 +2,9 @@@
  namespace wcf\system\package\plugin;
  use wcf\data\package\PackageCache;
  use wcf\data\page\Page;
+ use wcf\data\page\PageAction;
  use wcf\data\page\PageEditor;
 +use wcf\system\devtools\pip\IIdempotentPackageInstallationPlugin;
  use wcf\system\exception\SystemException;
  use wcf\system\language\LanguageFactory;
  use wcf\system\request\RouteHandler;