Update/add lock files and rebuild assets

Author: hoogi91

.gitignore

@@ -11,6 +11,5 @@ node_modules/
 Documentation-GENERATED*/
 Resources/Private/Composer/
 composer.phar
-composer.lock
 Makefile
 Vagrantfile

Classes/Service/CellService.php

@@ -39,7 +39,7 @@ public function __construct(StyleService $styleService)
         $this->styleService = $styleService;
         $this->currentLocales = $GLOBALS['TSFE']->config['config']['locale_all'] ?? '';
 
-        if ($this->currentLocales === '') {
+        if ($this->currentLocales === '' && is_int($GLOBALS['TSFE']->id)) {
             // happens, when Sites are used in TYPO3 9+
             $language = GeneralUtility::makeInstance(SiteFinder::class)
                 ->getSiteByPageId($GLOBALS['TSFE']->id)