Enable the upgrade notice permanently

Author: dtdesign

wcfsetup/install/files/lib/acp/page/PackageListPage.class.php

@@ -87,16 +87,10 @@ public function assignVariables()
             $taintedApplications[$application->getPackage()->packageID] = $application;
         }
 
-        $availableUpgradeVersion = WCF::AVAILABLE_UPGRADE_VERSION;
-        // During the RC phase the upgrade should only be offered when the maintenance mode is enabled.
-        if (!\OFFLINE) {
-            $availableUpgradeVersion = null;
-        }
-
         WCF::getTPL()->assign([
             'recentlyDisabledCustomValues' => LanguageFactory::getInstance()->countRecentlyDisabledCustomValues(),
             'taintedApplications' => $taintedApplications,
-            'availableUpgradeVersion' => $availableUpgradeVersion,
+            'availableUpgradeVersion' => WCF::AVAILABLE_UPGRADE_VERSION,
             'upgradeOverrideEnabled' => PackageUpdateServer::isUpgradeOverrideEnabled(),
         ]);
     }